Enhanced fatigue properties of nanostructured austenitic SUS 316L stainless steel
Enhanced fatigue properties of nanostructured austenitic SUS 316L stainless steel
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DOI：
10.1016/j.actamat.2011.07.061
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发表时间：
2011-10-01
期刊：
影响因子：
9.4
通讯作者：
Vinogradov, A.
中科院分区：
文献类型：
--
作者：
Ueno, H.;Kakihata, K.;Vinogradov, A.
本文报道了等径角挤压（ECAP）过程中奥氏体316L不锈钢纳米结构的单调和循环强度的显著提高。ECAP后的极限拉伸强度和疲劳极限分别超过1.3 GPa和550 MPa，而塑性并没有完全受损。微观结构观察表明，这些优异的机械性能可以归因于由于强烈的孪晶而产生的纳米结构，孪晶间距为30-40 nm。(C)2011 Acta Materialia Inc.由爱思唯尔有限公司发布。保留所有权利。
The present communication reports on the substantial improvement in monotonic and cyclic strength of austenitic 316L stainless steel nanostructured during equal channel angular pressing (ECAP). The ultimate tensile strength and the fatigue limit after ECAP exceed 1.3 GPa and 550 MPa, respectively, while the ductility was not fully compromised. Microstructural observations showed that these excellent mechanical properties can be attributed to the nanostructure created due to intensive twinning, with an inter-twin spacing of 30-40 nm. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.