Strong temperature - Dependence of Ni -alloying influence on the stacking fault energy in austenitic stainless steel

被引：18
|
作者：
Dong, Zhihua [1 ]
Li, Wei [1 ]
Chai, Guocai [2 ,3 ]
Vitos, Levente [1 ,4 ,5 ]
机构：
[1] KTH Royal Inst Technol, Dept Mat Sci & Engn, Appl Mat Phys, SE-10044 Stockholm, Sweden
[2] AB Sandvik Mat Technol R&D Ctr, SE-81181 Sandviken, Sweden
[3] Linkoping Univ, Dept Management & Engn, Div Engn Mat, SE-58183 Linkoping, Sweden
[4] Uppsala Univ, Div Mat Theory, Dept Phys & Astron, Box 516, SE-75121 Uppsala, Sweden
[5] Wigner Res Ctr Phys, Res Inst Solid State Phys & Opt, POB 49, H-1525 Budapest, Hungary
来源：
SCRIPTA MATERIALIA | 2020年 / 178卷
基金：
瑞典研究理事会; 匈牙利科学研究基金会;
关键词：
Alloying; Stacking fault energy; Temperature; Austenitic stainless steel; Ab initio calculation; DEFORMATION MICROSTRUCTURE; POTENTIAL MODEL; APPROXIMATION; MARTENSITE; BEHAVIOR; STATE; MN;
D O I：
10.1016/j.scriptamat.2019.12.013
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Using ab initio alloy theory, we calculate the impact of Ni on the stacking fault energy in austenitic stainless steel as a function of temperature. We show that the influence of Ni strongly couples with temperature. While a positive effect on the stacking fault energy is obtained at ambient temperature, the opposite negative effect is disclosed at elevated temperatures. An important rationale behind is demonstrated to be the variation of magneto-volume coupling induced by Ni alloying. The alloy influence on the finite temperature evolution of Ni impact is evaluated for elements Cr, Mo and N. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：438 / 441
页数：4
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