Fatigue of stainless steel in hydrogen
Fatigue of stainless steel in hydrogen
复制标题
不锈钢在氢气中的疲劳
DOI：
10.1007/bf02662375
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发表时间：
1983
期刊：
影响因子：
--
通讯作者：
C. Altstetter
中科院分区：
文献类型：
--
作者：
G. Schuster;C. Altstetter
本文比较了两种奥氏体不锈钢合金AISI 301和302在大气压力和室温下在空气、氩气和氢气环境中的疲劳裂纹扩展速率。在裂纹尖端的应力作用下，301钢的奥氏体比302钢更大程度地发生了α ′马氏体相变。还在氢或氩下的冷加工条件下测试钢。氢被发现有两种钢的有害影响，但效果是强的不稳定比稳定的合金。冷加工降低了氩和氢中的疲劳裂纹扩展速率，但氢中的降低比氩中的小。在疲劳裂纹附近的金相，断口和显微硬度的调查，试图了解所观察到的疲劳行为的原因。
The fatigue crack growth rates of two austenitic stainless steel alloys, AISI 301 and 302, were compared in air, argon, and hydrogen environments at atmospheric pressure and room temperature. Under the stresses at the crack tip the austenite in type 301 steel transformed martensitically to a’ to a greater extent than in type 302 steel. The steels were also tested in the cold worked condition under hydrogen or argon. Hydrogen was found to have a deleterious effect on both steels, but the effect was stronger in the unstable than in the stable alloy. Cold work decreased fatigue crack growth rates in argon and hydrogen, but the decrease was less marked in hydrogen than in argon. Metallographic, fractographic, and microhardness surveys in the vicinity of the fatigue crack were used to try to understand the reasons for the observed fatigue behavior.