Intergranular Stress Corrosion Cracking growth perpendicular to fatigue pre-cracks in T–L oriented compact tension specimens in simulated Pressurized Water Reactor primary water
Intergranular Stress Corrosion Cracking growth perpendicular to fatigue pre-cracks in T–L oriented compact tension specimens in simulated Pressurized Water Reactor primary water
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DOI：
10.1016/j.corsci.2014.06.003
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发表时间：
2014-09
影响因子：
8.3
通讯作者：
S. Yaguchi;T. Yonezawa
中科院分区：
文献类型：
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作者：
S. Yaguchi;T. Yonezawa
本文对冷轧316不锈钢T-L取向紧凑拉伸试样垂直于疲劳预裂纹面的晶间应力腐蚀裂纹（IGSCC）扩展进行了实验研究。单向冷轧导致在平行于轧制平面的平面上产生明显的片层局部应变。氧化物沿沿着晶间裂纹检测。据推断，晶间开裂是由于选择性氧化和增强的高扩散率在晶界加上层状局部应变。有人认为，应变诱导氧化可能是一个可能的机制IGSCC冷轧不锈钢在模拟压水堆环境。
Intergranular Stress Corrosion Cracking (IGSCC) growth observed perpendicular to the plane of fatigue pre-cracks in T–L oriented compact tension specimens made of highly cold-rolled Type 316 stainless steel has been investigated metallurgically. One-directional cold rolling resulted in significant lamellar local strains on the plane parallel to the rolling plane. Oxide was detected along intergranular crack. It is deduced that intergranular cracking was due to selective oxidation and enhanced high diffusivity at grain boundaries coupled with lamellar local strains. It is argued that strain-induced oxidation could be a possible mechanism for IGSCC in cold-rolled stainless steels in simulated Pressurized Water Reactor environment.