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What is the aging hardening phenomenon of stainless steel pipe?

Release time:2021.06.19 Announcer:TAI-STEEL GROUP Hits:

The aging phenomenon of stainless steel pipe means that the material of stainless steel pipe changes over time. The hardness of stainless steel increases with time, which is age hardening. The phenomenon of aging does not only mean hardening. Hardness and strength are the most prominent characteristics of stainless steel, so we call it aging to mean hardening. Due to the phenomenon of age hardening, the invention of duralumin is available. The hard aluminum alloy is referred to herein as the aluminum alloy 2000 series, and the present invention is good. The age hardening of stainless steel pipes can be understood as follows.

The alloy elements that should be precipitated during the heat treatment of the stainless steel tube will not precipitate due to rapid cooling, but are forced to dissolve in the steel tube, which is a solution treatment. The solution-treated stainless steel pipe is in an unstable state, and the alloy elements inside it have the opportunity to precipitate, trying to restore the stable state. As time goes by, the alloying elements are gradually deposited, making the relative sliding between the alloy grids more and more difficult, that is, the hardness of the alloy is getting higher and higher. From the above process, age hardening can be called precipitation hardening. The aging effect of hardening at room temperature is room temperature hardening. Artificial age hardening is a method of artificially increasing the temperature and accelerating the movement of the elements dissolved in the alloy to accelerate the age hardening. This artificial age hardening is also called precipitation hardening. Aluminum alloys and castings have relevant standards in JIS.

T4 indicates that hardening is carried out at room temperature after quenching, and T5 and T6 indicate that the tempering treatment is precipitation hardening. The 600 series stainless steel is called precipitation hardening, which is a kind of precipitation hardened steel. As a term similar to aging, it changes over time and changes over time. This is the same as age hardening, which refers to material changes that occur over time, but in contrast to hardening, it usually refers to undesirable changes, that is, performance degradation.

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