疲劳裂纹偏折 fatigue crack deflection
It turns out that crack closure is the main reason for retardation, and crack tip blunting, crack deflection and strain-induced martensite would reinforce it.
室温蠕变对裂纹扩展产生延滞的原因主要是裂纹闭合,同时裂尖钝化、裂纹偏折及形变诱发马氏体的形成也会起到一定的作用。
参考来源 - SUS304不锈钢裂纹尖端的室温蠕变现象及其对疲劳裂纹扩展行为的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
粗晶组织比细晶组织的裂纹偏折更大，粗糙度诱发闭合效应更强，因而裂纹扩展较幔。
The short cracks deflect more severe in coarse grain structure than in fine grain one, result in roughness induced crack closure effect, therefore exhibit slow crack growth rate.
拉伸超载能阻滞321不锈钢的疲劳裂纹扩展速率，样品断面有明显的周期性的裂纹偏折或分叉；
The retardation of tensile overload will reduce the 321SS crack growth speed for the furcation on the fracture section.
室温蠕变对裂纹扩展产生延滞的原因主要是裂纹闭合，同时裂尖钝化、裂纹偏折及形变诱发马氏体的形成也会起到一定的作用。
It turns out that crack closure is the main reason for retardation, and crack tip blunting, crack deflection and strain-induced martensite would reinforce it.
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