Twin-induced grain boundary engineering for 316 austenitic stainless steel
Twin-induced grain boundary engineering for 316 austenitic stainless steel
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DOI：
10.1016/j.actamat.2006.06.030
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发表时间：
2006-11-01
期刊：
影响因子：
9.4
通讯作者：
Sakai, K.
中科院分区：
文献类型：
--
作者：
Michiuchi, M.;Kokawa, H.;Sakai, K.
通过孪晶诱导晶界工程，采用优化的一步形变热处理（3%预应变）和随后在1240 K下退火72 h，在316型奥氏体不锈钢中引入了非常高频率的重合位置晶格（CSL）晶界（86%）。所得钢在硫酸铁-硫酸试验期间显示出非常高的抗晶间腐蚀性。当CSL频率超过82%时，在阈值范围内随机边界网络的逾渗概率很低，并能显著抑制奥氏体不锈钢孪晶诱导晶界工程过程中的沿晶劣化。(c)2006 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
By twin-induced grain boundary engineering utilizing optimized one-step thermomechanical processing with 3% pre-strain and subsequent annealing at 1240 K for 72 h, a very high frequency of coincidence site lattice (CSL) boundaries (86%) was introduced into type 316 austenitic stainless steel. The resulting steel showed a remarkably high resistance to intergranular corrosion during ferric sulfate-sulfuric acid tests. A CSL frequency of over 82% may result in a very low percolation probability of random boundary networks in per-threshold and a remarkable suppression of intergranular deterioration during twin-induced grain boundary engineering of austenitic stainless steels. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.