The influence of silicon and aluminum alloying on the lattice parameter and stacking fault energy of austenitic steel

被引：58
|
作者：
Lehnhoff, G. R. [1 ]
Findley, K. O. [1 ]
De Cooman, B. C. [2 ]
机构：
[1] Colorado Sch Mines, Adv Steel Proc & Prod Res Ctr, George S Ansell Dept Met & Mat Engn, Golden, CO 80401 USA
[2] Pohang Univ Sci & Technol, Grad Inst Ferrous Technol, Pohang, South Korea
来源：
SCRIPTA MATERIALIA | 2014年 / 92卷
基金：
美国国家科学基金会;
关键词：
Metastable austenitic steel; Stacking fault energy; Transmission electron microscopy (TEM); Lattice parameter; INDUCED MARTENSITIC NUCLEATION; TWINNING-INDUCED PLASTICITY; HIGH-STRENGTH STEELS; X-RAY-DIFFRACTION; TRIP-STEELS; BAINITE TRANSFORMATION; STAINLESS-STEELS; MECHANICAL-PROPERTIES; MANGANESE; CARBON;
D O I：
10.1016/j.scriptamat.2014.07.019
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of Si and Al on the lattice parameter and stacking fault energy (SFE) of austenitic steel was studied. X-ray diffraction indicated that 2.5 wt.% Al alloying increased the austenite lattice parameter by 1.41 x 10(-3) nm, whereas 2.5 wt.% Si alloying had little effect. Partial dislocation separation measurements from weak-beam dark-field images indicated that 2.5 wt.% Al alloying increased the SFE by 12-17 mJ m(-2) and 2.5 wt.% Si alloying decreased the SFE by 6-7 mJ m(-2). (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：19 / 22
页数：4
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