Grain refinement strengthening of a micro-crystalline high nitrogen austenitic stainless steel
Grain refinement strengthening of a micro-crystalline high nitrogen austenitic stainless steel
复制标题
DOI：
10.1016/s0167-577x(02)01076-5
复制
发表时间：
2003-03-01
影响因子：
3
通讯作者：
Kenny, JM
中科院分区：
文献类型：
--
作者：
Di Schino, A;Kenny, JM
奥氏体不锈钢在过去80年的技术进步中不可或缺。由于镍的成本以及这种元素引起的过敏反应的前景，越来越多的实验室和工业正在尝试开发一种新的低镍含量的奥氏体不锈钢。为了保持奥氏体微观结构，镍还原与氮添加平衡。向奥氏体不锈钢中添加氮对于提高屈服强度和耐腐蚀性也非常有效，而不会降低延展性和韧性。为了进一步提高强度，可以联合收割机结合氮添加和晶粒细化的效果。本研究的目的是研究一种具有超细晶组织的高氮不锈钢（含约1%Ni和0.37%N）的显微组织与力学性能之间的关系。特别地，发现Hall-Petch依赖性适用于40至约2.5 μ m的晶粒尺寸范围。(C)2002 Elsevier Science B. V.保留所有权利。
Austenitic stainless steels have been indispensable for the progress of technology during the last 80 years. Due to the cost of nickel and to the prospective of allergic reactions caused by this element, more and more laboratories and industries are trying to develop a new class of austenitic stainless steels with a low nickel content. In order to maintain the austenitic microstructure, nickel reduction is balanced with nitrogen addition. Nitrogen addition to austenitic stainless steels is also very effective for improving yield strength and corrosion resistance without reducing ductility and toughness. In order to further increase the strength, it is possible to combine the effect of nitrogen addition and grain refining. The purpose of this study is to examine the relationship between microstructures and mechanical properties of a high nitrogen stainless steel (containing about 1% Ni and 0.37% N) with an ultrafine grained structure. In particular, the Hall-Petch dependency is found to apply over the range of grain size from 40 to about 2.5 mum. (C) 2002 Elsevier Science B.V. All rights reserved.