Microstructure effect on hydrogen-induced cracking in TM210 maraging steel
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- 作者：Gang Wang ; Yu Yan ; Jinxu Li ; Jingyu Huang ; Lijie Qiao ; Alex A. Volinsky
- 关键词：Maraging steel ; Hydrogen embrittlement ; Reverted austenite ; Martensite lath boundaries
- 刊名：Materials Science and Engineering: A
- 出版年：2013
- 出版时间：1 December, 2013
- 年：2013
- 卷：586
- 期：Complete
- 页码：142-148
- 全文大小：4568 K
文摘
Hydrogen embrittlement (HE) of TM210 maraging steel was studied by slow strain rate tensile and constant load tests. The over-aged sample exhibited the best resistance to HE, since HE susceptibility of the maraging steel does not depend on the strength, but rather on the reverted austenite content. The hydrogen concentration, observed by scanning Kelvin probe force microscopy, was enriched in the reverted austenite at the grain boundaries and martensite lath boundaries, resulting in hydrogen-induced cracks propagating along the grain boundaries and martensite lath boundaries.