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Hydrogen Embrittlement Stainless Steel
"On Hydrogen Embrittlement Stainless Steel"
The most important material in the world. For all kinds of metals, stainless steel is widely used because of its corrosion resistance. However, there is a problem among them, called hydrogen embrittlement, which cannot be ignored.
Hydrogen embrittlement in stainless steel is like a hidden disease in the body. At the beginning or it does not show its harm, and when the working conditions change, the stress is added, and the disaster will cause a wall. Hydrogen atoms enter between the stainless steel lattice, causing lattice distortion, and its toughness is gradually lost. Or when stretching, brittleness breaks suddenly; or under alternating stress, cracks develop, and eventually the material is damaged.
Investigate the cause, one is caused by the hydrogen source in the environment. If you are in a hydrogen-rich environment, such as a chemical industry or an electroplating workshop, hydrogen is easily absorbed by stainless steel. Second, the reason for the process. When pickling or welding, the operation is improper, and hydrogen also takes advantage of the porosity.
To solve this dilemma, there are various methods. At the beginning of material selection, carefully select the best anti-hydrogen embrittlement. Between the processes, optimize the process and control the intake of hydrogen. Such as welding, select the method and adjust the parameters to reduce the absorption of hydrogen. Or afterwards, apply the technique of removing hydrogen and tempering to make hydrogen escape and the properties of the composite.
For those who are used as devices, when they know the risk of hydrogen embrittlement, they should be carefully considered in the production of stainless steel to prevent micro-embrittlement. In this way, the device can be made durable without the risk of hydrogen embrittlement.
The most important material in the world. For all kinds of metals, stainless steel is widely used because of its corrosion resistance. However, there is a problem among them, called hydrogen embrittlement, which cannot be ignored.
Hydrogen embrittlement in stainless steel is like a hidden disease in the body. At the beginning or it does not show its harm, and when the working conditions change, the stress is added, and the disaster will cause a wall. Hydrogen atoms enter between the stainless steel lattice, causing lattice distortion, and its toughness is gradually lost. Or when stretching, brittleness breaks suddenly; or under alternating stress, cracks develop, and eventually the material is damaged.
Investigate the cause, one is caused by the hydrogen source in the environment. If you are in a hydrogen-rich environment, such as a chemical industry or an electroplating workshop, hydrogen is easily absorbed by stainless steel. Second, the reason for the process. When pickling or welding, the operation is improper, and hydrogen also takes advantage of the porosity.
To solve this dilemma, there are various methods. At the beginning of material selection, carefully select the best anti-hydrogen embrittlement. Between the processes, optimize the process and control the intake of hydrogen. Such as welding, select the method and adjust the parameters to reduce the absorption of hydrogen. Or afterwards, apply the technique of removing hydrogen and tempering to make hydrogen escape and the properties of the composite.
For those who are used as devices, when they know the risk of hydrogen embrittlement, they should be carefully considered in the production of stainless steel to prevent micro-embrittlement. In this way, the device can be made durable without the risk of hydrogen embrittlement.
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