Hydrogen-assisted quasi-cleavage fracture in a single crystalline type 316 austenitic stainless steel
Hydrogen-assisted quasi-cleavage fracture in a single crystalline type 316 austenitic stainless steel
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DOI：
10.1016/j.corsci.2013.06.018
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发表时间：
2013-10-01
影响因子：
8.3
通讯作者：
Tsuzaki, Kaneaki
中科院分区：
文献类型：
--
作者：
Koyama, Motomichi;Akiyama, Eiji;Tsuzaki, Kaneaki
研究了单晶316型奥氏体不锈钢的氢脆性能。在充氢条件下沿沿着和方向进行拉伸试验.< 111 >< 001 >在两个拉伸方向上均观察到氢助{111}准解理断裂。断裂应力和伸长率的退化，吸氢量和氢致断裂表面依赖于拉伸取向。氢脆性能的拉伸取向依赖性被证明是由于变形孪晶行为。此外，银装饰技术澄清，氢局域化的区域，氢辅助准解理断裂出现。(C)2013爱思唯尔有限公司保留所有权利。
Hydrogen embrittlement properties were examined in a single crystalline type 316 austenitic stainless steel. Tensile tests were conducted along the < 111 > and < 001 > directions under hydrogen charging. Hydrogen-assisted {111} quasi-cleavage fracture was observed in both tensile orientations. The degradation of fracture stress and elongation, hydrogen uptake, and hydrogen-induced fracture surface were dependent on the tensile orientation. The tensile orientation dependence of the hydrogen embrittlement properties was shown to result from the deformation twinning behavior. In addition, Ag decoration technique clarified that hydrogen localizes on regions where hydrogen-assisted quasi-cleavage fracture appeared. (C) 2013 Elsevier Ltd. All rights reserved.