A novel supersaturated medium entropy alloy with superior tensile properties and corrosion resistance
A novel supersaturated medium entropy alloy with superior tensile properties and corrosion resistance
复制标题
一种具有优异拉伸性能和耐腐蚀性能的新型过饱和中熵合金
DOI：
10.1016/j.scriptamat.2020.05.023
复制
发表时间：
2020-09-01
影响因子：
6
通讯作者：
Liu, Yong
中科院分区：
文献类型：
--
作者：
Fu, Ao;Liu, Bin;Liu, Yong
介绍了一种新型的不锈钢等原子FeCrNi中熵合金(MEA)，该合金具有更好的拉伸性能和耐腐蚀性。该合金具有良好的拉伸性能，屈服强度为644 Mpa，极限拉伸强度接近1.03 Gpa，塑性接近54%，这主要是由于纳米孪晶、形变诱导相变和中间元素固溶强化等多种变形机制所致。该合金中铬含量高，有利于形成稳定的钝化膜，具有优异的耐蚀性能。这项工作为通过创新的成分设计和加工技术开发高性能不锈钢材料提供了指导。(C)2020 Acta Materialia Inc.由爱思唯尔有限公司出版。版权所有。
We introduce a novel stainless equiatomic FeCrNi medium entropy alloy (MEA) with improved tensile properties and corrosion resistance. This alloy exhibits superior tensile properties with yield strength of 644 MPa, ultimate tensile strength of similar to 1.03 GPa and ductility of similar to 54 %, mainly owing to the multiple deformation mechanisms including nanotwinning, deformation induced phase transformation and solution strengthening of intersitial elements. The high content of Cr in this alloy stimulates the formation of stable passivation film, resulting in a superior corrosion resistance. This work provides a guideline for the development of high-performance stainless materials via innovative composition design and processing techniques. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.