A quantitative investigation of the effect of Mn segregation on microstructural properties of quenching and partitioning steels

被引：46
|
作者：
HajyAkbary, Farideh [1 ,2 ]
Sietsma, Jilt [2 ]
Petrov, Roumen H. [2 ,3 ]
Miyamoto, Goro [4 ]
Furuhara, Tadashi [4 ]
Santofimia, Maria Jesus [2 ]
机构：
[1] M2i, POB 5008, NL-2600 GA Delft, Netherlands
[2] Delft Univ Technol, Dept Mat Sci & Engn, Mekelweg 2, NL-2628 CD Delft, Netherlands
[3] Univ Ghent, Dept Mat Sci & Engn, Technol Pk 903, Ghent, Belgium
[4] Tohoku Univ, Inst Mat Res, Aoba Ku, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan
来源：
SCRIPTA MATERIALIA | 2017年 / 137卷
基金：
欧洲研究理事会;
关键词：
Quenching and partitioning; Segregation; Microscopy and microanalysis techniques; MARTENSITE-TRANSFORMATION; CARBIDE PRECIPITATION; HEAT-TREATMENT; CARBON; AUSTENITE; BAINITE; ALLOY;
D O I：
10.1016/j.scriptamat.2017.04.040
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Quenching and partitioning (Q&P) process of a 03C-1.3Si-3.2Mn (wt%) steel with Mn segregation is studied experimentally and theoretically. During initial quenching a higher fraction of martensite forms in Mn-poor regions compared to Mn-rich regions. In the partitioning process, austenite in Mn-poor regions is surrounded with a higher fraction of martensite than austenite in Mn-rich regions and therefore receives a larger amount of carbon. When carbon partitioning is not sufficient to stabilize austenite, a higher fraction of martensite forms, during final quenching, in Mn-poor regions. Lowering the quenching temperature in the Q&P process reduces inhomogeneity in the distribution of phases. (C) 2017 Acta Materialia Inc Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：27 / 30
页数：4
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