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Plastic Deformation and Damage Behavior of AL6XN Super-Austenitic Stainless Steels

机译:AL6XN超级奥氏体不锈钢的塑性变形和损伤行为

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Tensile and compressive deformation and damage behaviors of Al6XN super-austenitic stainless steels were examined at different strain rates. The deformation and fracture surfaces were characterized by scanning electron microscopy (SEM). It was found that the uniaxial deformation (tensile or compressive) behaviors of Al6XN stainless steel shows a low strain rate sensitivity over the range of 10-4s-1 - 10-2s-1. The tensile and compressive yield strengths measured are nearly comparable. The steel shows a good tensile plasticity. Dislocation slip deformation is the main characteristic of uniaxial deformation. All fracture surfaces induced by tensile deformation at different strain rates can be divided into two parts, i.e., fibrous zone and shear lip zone. The fibrous zone consists of dimples with a bimodal size.
机译:在不同的应变速率下研究了Al6XN超奥氏体不锈钢的拉伸和压缩变形及损伤行为。变形和断裂表面通过扫描电子显微镜(SEM)表征。发现Al6XN不锈钢的单轴变形(拉伸或压缩)行为在10-4s-1-10-2s-1的范围内显示出较低的应变率敏感性。测得的拉伸和压缩屈服强度几乎可比。该钢显示出良好的拉伸塑性。位错滑移变形是单轴变形的主要特征。在不同应变率下由拉伸变形引起的所有断裂表面可分为两部分,即纤维区和剪切唇区。纤维区由双峰大小的酒窝组成。

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