Effects of holding temperature for austempering on mechanical properties of Si-Mn TRIP steel

被引：0
作者：
Li, Z [1 ]
Wu, D
机构：
[1] Northeastern Univ, Shenyang 110004, Peoples R China
[2] Shenyang Inst Aeronaut Engn, Shenyang 110034, Peoples R China
来源：
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2004年 / 11卷 / 06期
关键词：
austempering; intercritical annealing; retained austenite; strain-induced martensite transformation; transformation-induced plasticity (TRIP); mechanical property;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A new type of high strength steel containing a significant amount of stable retained austenite was obtained by austempering immediately after intercritical annealing. This sort of low carbon steel only contains alloying elements of silicon and manganese rather than nickel and chromium. Its mechanical properties were enhanced considerably due to strain-induced martensite transformation and transformation-induced plasticity (TRIP) of retained austenite when it was strained at temperatures between M-s and M-d, because retained austenite was moderately stabilized due to carbon enrichment by austempering. Austempering was carried out at different temperatures and 400 degreesC was found to be optimal. Tensile strength, total elongation and strength-ductility balance reached the maximum values and the product of tensile strength and total elongation exceeded 30 135 MPa % when the TRIP steel was held at 400 degreesC and strained at 350 degreesC.
引用
收藏
页码：40 / 44
页数：5
相关论文
共 19 条
[1]   Effects of alloying elements on mechanical properties and phase transformation of cold rolled TRIP steel sheets [J].
Baik, SC ;
Kim, S ;
Jin, YS ;
Kwon, O .
ISIJ INTERNATIONAL, 2001, 41 (03) :290-297
[2]   BAINITE TRANSFORMATION IN A SILICON STEEL [J].
BHADESHIA, HKDH ;
EDMONDS, DV .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1979, 10 (07) :895-907
[3]   Deformation behavior of low carbon TRIP sheet steels at high strain rates [J].
Choi, ID ;
Bruce, DM ;
Kim, SJ ;
Lee, CG ;
Park, SH ;
Matlock, DK ;
Speer, JG .
ISIJ INTERNATIONAL, 2002, 42 (12) :1483-1489
[4]  
De Meyer M, 1999, ISIJ INT, V39, P813
[5]   THERMODYNAMICS CONTROLLING PROEUTECTOID FERRITE TRANSFORMATIONS IN FE-C-MN ALLOYS [J].
GILMOUR, JB ;
PURDY, GR ;
KIRKALDY, JS .
METALLURGICAL TRANSACTIONS, 1972, 3 (06) :1455-+
[6]   HOT DEFORMATION CHARACTERISTICS OF SI-MN TRIP STEELS WITH AND WITHOUT NB MICROALLOY ADDITIONS [J].
HANZAKI, AZ ;
HODGSON, PD ;
YUE, S .
ISIJ INTERNATIONAL, 1995, 35 (03) :324-331
[7]   On the influence of interactions between phases on the mechanical stability of retained austenite in transformation-induced plasticity multiphase steels [J].
Jacques, PJ ;
Ladrière, J ;
Delannay, F .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (11) :2759-2768
[8]   Effects of heat treatment and alloying elements on the microstructures and mechanical properties of 0.15 wt pct C transformation-induced plasticity-aided cold-rolled steel sheets [J].
Kim, SJ ;
Lee, CG ;
Choi, I ;
Lee, S .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (03) :505-514
[9]   Phase transformation and mechanical properties of Si-free CMnAl transformation-induced plasticity-aided steel [J].
Mahieu, J ;
Maki, J ;
De Cooman, BC ;
Claessens, S .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2002, 33 (08) :2573-2580
[10]   The influence of the stress state on the plasticity of transformation induced plasticity-aided steel [J].
Pyshmintsev, IY ;
De Meyer, A ;
De Cooman, BC ;
Savray, RA ;
Shveykin, VP ;
Vermeulen, M .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2002, 33 (06) :1659-1667
12