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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing >Tensile and compressive properties of AISI 304L stainless steel subjected to equal channel angular pressing
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Tensile and compressive properties of AISI 304L stainless steel subjected to equal channel angular pressing

机译：等通道角压下AISI 304L不锈钢的拉伸和压缩性能

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摘要

The present work investigated the compressive and tensile properties of AISI 304L austenitic stainless steel subjected to equal channel angular pressing (ECAP) at high temperature (700 ℃). Tensile and compressive strength, elongation, Vickers hardness and fracture mode of annealed and ECAPed material were systematically compared. It is found that with increasing the number of ECAP passes the tensile strength and hardness increase, however, the elongation and strain hardening rate decrease. The compressive yield strength and strain hardening rate displayed obvious anisotropy when the ECAPed austenitic stainless steel was compressed along different orientations. The tensile fracture mode was changed from the ductile to brittle feature with increasing the number of ECAP passes. Accordingly, the ECAPed steel exhibited apparent asymmetry in tensile and compressive properties. Besides, the relationship between strength and Vickers hardness was established. Based on the results above, the corresponding deformation and fracture mechanisms were discussed.
机译：本工作研究了在高温（700℃）下等通道角挤压（ECAP）对AISI 304L奥氏体不锈钢的压缩和拉伸性能。系统地比较了退火和ECAPed材料的拉伸和抗压强度，伸长率，维氏硬度和断裂模式。发现随着ECAP通过次数的增加，抗拉强度和硬度增加，然而，伸长率和应变硬化速率降低。当沿不同方向压缩ECAPed奥氏体不锈钢时，压缩屈服强度和应变硬化率表现出明显的各向异性。随着ECAP通过次数的增加，拉伸断裂模式从韧性转变为脆性。因此，ECAPed钢在拉伸和压缩性能方面表现出明显的不对称性。此外，建立了强度与维氏硬度之间的关系。基于以上结果，讨论了相应的变形和断裂机理。

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