"This kind of mithril can be widely used in the aviation field.
Its specific gravity is only 1.38, which is only half of aluminum alloy.
If all this metal is used to replace aluminum alloy, then the weight of our aircraft fuselage can be reduced.
Nearly half.
This is really great," an engineer said excitedly.
"Yes, you are right.
But you get what you pay for.
The cost of building the fuselage of this aircraft is more than three times the original price," said a companion next to him who is sensitive to numbers.
"That's worth it.
Nowadays, most of the cost of our aircraft is mainly in the engine and electronic system, and the fuselage accounts for less than half of the total price.
After all, it is almost twice as expensive as before."
"However, now I heard that this kind of mithril is not high enough.
Even if we want to completely replace aluminum alloy, it will not be possible soon."
Aviation materials are very sensitive to stress, and the lighter the better.
Relatively cheap aluminum alloy is originally very suitable, but its high-temperature strength is not good.
Titanium alloys have high high-temperature strength, but their specific gravity is still a bit high and they are too expensive.
If the speed does not exceed Mach 2.5, using titanium alloy is too luxurious.
Aluminum alloys used in aviation are generally aluminum-magnesium alloys and duralumin.
In the 1980s, lighter aluminum-lithium alloys were invented.
Aluminum-lithium alloy is lighter than aluminum-magnesium alloy, and its strength is not bad.
However, lithium is relatively expensive, so aluminum-lithium alloy cannot be used in large quantities.
The magnesium-sodium alloy is different.
Both metals are relatively common minerals and are rich in resources.
There is no need to worry about the source of raw materials.
However, both metals are chemically very active, and the magnesium strip burning test is included in junior high school chemistry classes.
Sodium metal is even more powerful.
Its specific gravity is smaller than water.
It will burn when it comes into contact with water, producing highly corrosive sodium hydroxide.
It will also absorb water vapor in the air and ignite spontaneously.
Most people would not put their mind to these two metals.
In the history of the original time and space, a nuclear physics laboratory that first produced magnesium-sodium alloy was not looking for aviation materials, but was looking for a new reactor coolant.
After testing the proportions of various formulas, they accidentally discovered that after using a suitable proportion and stabilizing additives, they actually obtained a stable magnesium-sodium alloy, a stable metal that will not spontaneously ignite in air and water.
However, this kind of thing has a relatively high melting point and is not suitable as a reactor coolant, but its solid state is very soft, so it is of no use.
Its greatest use is as a catalyst for certain reactions and equipment sealing materials.
But a few decades later, a turning point in its fate came, with the emergence of a new process called radiation treatment.
The discovery of its new uses was similar to that of iron-aluminum alloys.
At that time, in order to find out the effect of radiation treatment, people put various materials into the experiment, and magnesium-sodium alloy was also thrown into it.
Then people discovered that this kind of thing had a phenomenon of "atomic microcollapse".
The collapse rate of this alloy is higher than that of iron-aluminum alloy.
After radiation treatment, the size shrinks by 2% and the specific gravity increases by 6% to 1.38.
The specific gravity of titanium alloy is about 4.5, that of high-strength aluminum alloy is about 2.8, and that of aluminum-lithium alloy is about 2.47.
To put it simply, after magnesium-sodium alloys are irradiated by specific radiation sources under certain conditions, their atoms are squeezed tighter.
This has been confirmed by electron microscopes and metallographic microscopes.
This has led to a substantial increase in the strength of the alloy and a great improvement in corrosion resistance, which is close to that of titanium alloys.
It's just that the high-temperature strength is lower than that of titanium alloy, but much higher than that of aluminum-magnesium alloy.
Free novels bring you joy and joy ---> storyskyline.net
However, the cost of this material is much lower than that of titanium alloy, and its processing performance is much better.
Of course, no matter how you say it, whether it is sodium smelting or magnesium-sodium alloy smelting, it is a relatively high-end technology, and the cost is definitely higher than that of aluminum alloy.
The current ex-factory price of aviation aluminum is about 600 yuan per ton, while the price of magnesium-sodium alloy is about 2,100 yuan per ton.
Danxin Town, Suyou County, Xilin City, Monan Province.
Danxin Town was originally named "Zhurihe Town", and "Zhurihe" means "heart" in Mongolian.
The name comes from a mountain outside the town whose shape looks like a heart.
After the national place names were standardized in 1916, the place was renamed Danxin Town, and the mountain was also renamed Danxin Mountain.
Suyou County is located in the north temperate zone and has an arid continental climate.
The annual precipitation averages 170㎜190㎜.
There are no perennial rivers in the territory, surface water is scarce, groundwater resources are unstable, and deep water development is difficult.
Because of the lack of water, before the founding of the People's Republic of China, there were only more than a hundred permanent residents here, mainly engaged in animal husbandry.
However, the northwest wind prevails here all year round, and the wind force is generally level 35.
It is one of the best wind energy areas in the country.
Moreover, the annual average sunshine hours here are as high as more than 3,200 hours, making it also a very good solar area.
Moreover, the natural resources here are very rich, especially iron ore and alkali ore, as well as gold ore, oil, limestone and other resources.
After the founding of the People's Republic of China, the "Three North Immigration" project and a series of infrastructure construction were launched, and the place began to gradually become prosperous.
By 1922, the "North to South Water Diversion Project" was partially completed, and the water pipeline from Lake Baikal to the right section of Suzhou was connected.
A concrete culvert with a diameter of three meters sent the refreshing lake water from Lake Baikal to this water-scarce land. .
After the water shortage problem was solved, the development of the area accelerated greatly.
Up to now, the county's population has exceeded 30,000, and it has become a prosperous small city.
By the way, the "North-South Water Diversion Project" is a large systematic project.
It not only transfers water from Lake Baikal, but also involves transferring water from the Lena River to Lake Baikal, and from other Siberian rivers to the south.
A series of projects whose engineering volume and construction difficulty exceed those of the South-to-North Water Diversion Project.
In particular, it involves rivers such as the Yenisey River and the Ob River in Belarus, water transfer from the Yenisey River and other rivers to Xinjiang, water transfer from the Ob River and other rivers to the Aral Sea and Lake Balkhash, etc.
The specific approach is to find suitable terrain near the middle reaches of these rivers to build 200-meter or even 300-meter-high dams to form a huge reservoir, and use the high height difference to reverse the flow of water to form a "north-to-south water diversion" situation. , the lack of power in the gap is made up by a large water pump.
Because evaporation is very high in areas where water sources pass through, and mountains and rivers need to be crossed in between, the main journey of the waterway is carried out through underground culverts.
After the project is fully completed, water from these northern rivers will be diverted to large areas in the northwest and north through underground culverts.
This will not only meet the needs of transforming the northern desert environment, but also increase a large amount of cultivated land and pasture land.
Depending on the types of crops and irrigation methods, it is estimated that 102 billion acres of cultivated land can be added, as well as more pasture land and forest land.
Of course, this "North-South Water Diversion Project" is very large, and it is only more than half completed.
Fortunately, due to the economic crisis in recent years, many white-skinned people from Europe and the United States have come to work, which has greatly accelerated the construction speed.
However, it is estimated that it will have to wait until 1938 to be fully completed.
As for the South-to-North Water Diversion Project, most of it has been completed and is expected to be completed around 1935.
Danxin Town is located in the southern part of Suyou County.
It is an emerging comprehensive town integrating industry, animal husbandry and agriculture.
However, the difference between this place and other areas in the county is that this town is under semi-military control, and most of the residents in the town are members of the military.
In the wild about 30 kilometers outside the town, there is a large comprehensive training base of the army.
This is the famous Danxin Training Camp, which has a blue division of imaginary enemy forces that simulates foreign armies.
Not only do they simulate foreign armies, they sometimes also guest-star as alien armies.
They may be Martians, Zentraedians, or Namekians.
Over the years, various divisions and brigades of the People's Liberation Army Army have taken turns to fight against foreign armies or aliens here.
Star Army play.
Well, it was mainly because they were beaten by the alien troops.
People in the People's Liberation Army often had their faces pressed to the floor and rubbed back and forth by the "alien princes" At this time, the roar of artillery could be heard from time to time in this training camp.
Uh, that's right, we're fighting aliens again.
Free novels bring you joy and joy ---> storyskyline.net
On one position, dozens of combat anti-aircraft guns and armored destroyers lined up neatly, taking turns firing at armored targets in the distance.
These artillery fire calibers are available from 35 mm to 105 mm.
There were even a few anti-aircraft tanks with their 75mm anti-aircraft guns leveled, pretending to be armored destroyers.
There were not many armored targets in the distance, only sixteen, and the sixteen tracked vehicles all looked weird.
It can be seen that it was modified from the Red Wolf chassis.
There is no artillery installed, but there is a large steel plate in the front.
It looks like an ancient shield vehicle.
Sixteen "alien" tanks advanced under gunfire.
The screaming shells rattled the steel plates, but none penetrated them.
"Damn it, what the hell is this?
I can't even penetrate it."
"How can it be fake?"
"This is unscientific.
This is too unscientific."
"Damn it, the director alien cheated again" The Red Army officers and soldiers were dumbfounded when they saw the "alien" tanks coming with smoke and fire as if they were strolling through a courtyard.
The commander of the anti-armor battalion was about to cry.
He had no choice but to pick up the intercom and report to his superiors: "Division Commander, it still doesn't work.
I have used all the 130s, but I still can't penetrate those turtle shells."
"Give me a pair of new 105mm armor-piercing bullets.
I won't believe it if they are gold coin bullets."
Yang Ning hung up the intercom angrily.
Master Yang picked up the telescope with red eyes and observed the situation on the front line.
"Grandma, you're a bear, Company 105, give me all the gold coins and ammunition," the battalion commander yelled at the top of his lungs.
"Battalion Commander, each of our guns is only equipped with three rounds of gold coin ammunition," the company commander reminded.
"No matter what, I'll use it all."
Six of the latest "Mountain Lion" 105mm self-propelled combat artillery, or armored destroyers, began to get busy.
In the navy, this kind of gun is the main gun of a frigate or the secondary gun of a battleship.
It is a gun shared by the army and navy and is very powerful.
It can not only use armor-piercing projectiles to hit armored targets, but also use armor-breaking projectiles to blow up fortifications, and it can also use grenades to attack infantry.
At present, this kind of tank has just begun to be installed, and only the first 20 Class A divisions with serial numbers have it in stock.
For example, the current 9th Mechanized Infantry Division.
Mountain Lion is a member of the "turretless international".
It has no turret, the barrel protrudes directly from the front face, and the body is lower than the armored fighting vehicle tank of the same level.
In order to fight against enemy tanks, its front armor is extremely thick, even thicker than ordinary tanks.
However, the armor on the sides and back is not good enough and can only withstand a 20mm machine gun.
The ammunition hand opened the ammunition box specially reserved for "gold coin bullets", revealing three odd-shaped shells.
Their warheads shrank sharply, forming an arrow shape, which was obviously much thinner than the shells.
This is a high-speed tail-stabilized sabot-piercing projectile nicknamed the "Gold Coin Bullet" in the military.
Its front section is a tungsten alloy arrow-shaped cone.
Because of its high cost, it was nicknamed the "gold coin bullet" by the officers and soldiers.
But you get what you pay for.
Although this thing is expensive, its power is pure gold.
In theory, it can penetrate the armor of battleships.
Of course, if it is really used to attack battleships, it will be useless.
At most, it will just open a small hole in the battleship.
Free novels bring you joy and joy ---> storyskyline.net
The loader started the semi-automatic loading machine, picked up a "gold coin bullet" and fed it into the gun barrel.
The commander lay down in front of the sight and placed the cross in the lens firmly on an "alien" tank.
"Launch" He pressed the launch button hard.
"Boom" the Mountain Lion's muzzle emitted a stream of gunfire that was different from before, brighter and thicker.
The other five Mountain Lions roared almost simultaneously.
"Boom boom boom" With a muzzle velocity of 1,300 meters per second and powerful kinetic energy, the six "gold coin bullets" rushed towards the target 500 meters away.
"Dang-dang-dang-dang" a series of harsh crashing sounds sounded.
The six "alien" tanks that were hit were slightly shaken, and then continued to move as if nothing happened.
"It's already 500 meters without any clothes on."
The jaws of the mountain lion company commander and his officers and soldiers almost dropped.
"No, it's impossible.
This is a gold coin bullet that can penetrate the armor of a battleship."
Yang Ning, Master Yang, almost crushed the telescope.
After a while, the intercom rang, and the battalion commander shouted with a cry: "Commander, it still doesn't work.
The gold coin bullets are useless, even if they are used up, they are useless.
The last round was placed at a distance of 200 meters, and the best result was Plugged into the armor plate, we were breached and lost."
"I've seen it all, we lose this time."
Teacher Yang threw away the intercom, turned around like a whirlwind, and roared at a smiling guy: "Sister, you are cheating again."
"Alien Chief" held a tea cup and smiled happily: "Hahahaha, Lao Yang, I really didn't cheat this time.
Didn't you even try gold coin bombs?"
"Bah, if in actual combat, after being hit by a tail-stabilized discarding sabot armor-piercing projectile, even if the main armor is not penetrated, the huge vibration generated can destroy all the electronic equipment and sighting system in the car.
These two components are affected by The damaged tank no longer has combat effectiveness."
"Alien" Major General shrugged and said unhurriedly: "But the rules set by the director's department are only when they are broken down.
Moreover, those simulated tanks are all remote-controlled.
You see they don't even stop, which shows that The electronic equipment is not broken.”
"Don't fool me, that steel plate is sticking out, which affects the transmission of vibration, otherwise those remote control toys would be broken long ago."
The "chief director" next to him coughed a few times and said with a smile: "Old Yang, you did not lose unfairly this time.
Their steel plate is a new type of armor.
This live-fire exercise is also to test the anti-destruction ability of the new armor
.
" :