Nanoindentation investigation on the mechanical stability of individual austenite grains in a medium-Mn transformation-induced plasticity steel

被引：131

作者：

He, B. B. ^{[1
]}

Huang, M. X. ^{[1
]}

Liang, Z. Y. ^{[1
]}

Ngan, A. H. W. ^{[1
]}

Luo, H. W. ^{[2
]}

Shi, J. ^{[2
]}

Cao, W. Q. ^{[2
]}

Dong, H. ^{[2
]}

机构：

[1] Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China

[2] Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China

来源：

SCRIPTA MATERIALIA | 2013年 / 69卷 / 03期

关键词：

Third-generation AHSS; Medium-Mn TRIP; Nanoindentation; Martensitic transformation; Single austenite grain; MARTENSITIC-TRANSFORMATION; RETAINED AUSTENITE; BOUNDARIES; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2013.03.030

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The mechanical stability of individual retained austenite grains is studied by nanoindentation combined with electron backscattered diffraction, scanning electron microscope, energy-dispersive X-ray spectroscopy and transmission electron microscopy. The average hardness of retained austenite and ferrite is 7.7 and 3.4 GPa, respectively. The large scatter of hardness distribution in retained austenite may be due to the varied stability and boundary structure of different austenite grains. The mechanical stability of retained austenite increases with Mn content. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：215 / 218

页数：4

共 24 条

[1] Investigation of strain-induced martensitic transformation in metastable austenite using nanoindentation [J].

Ahn, T. -H. ;

Oh, C. -S. ;

Kim, D. H. ;

Oh, K. H. ;

Bei, H. ;

George, E. P. ;

Han, H. N. .

SCRIPTA MATERIALIA, 2010, 63 (05) :540-543

[2] Driving Force and Logic of Development of Advanced High Strength Steels for Automotive Applications [J].

Bouaziz, Olivier ;

Zurob, Hatem ;

Huang, Mingxin .

STEEL RESEARCH INTERNATIONAL, 2013, 84 (10) :937-947

[3] Structure-properties relationship in TRIP steels containing carbide-free bainite [J].

De Cooman, BC .

CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE, 2004, 8 (3-4) :285-303

[4] Chemical gradients across phase boundaries between martensite and austenite in steel studied by atom probe tomography and simulation [J].

Dmitrieva, O. ;

Ponge, D. ;

Inden, G. ;

Millan, J. ;

Choi, P. ;

Sietsma, J. ;

Raabe, D. .

ACTA MATERIALIA, 2011, 59 (01) :364-374

[5] Indentation size effect in metallic materials:: Modeling strength from pop-in to macroscopic hardness using geometrically necessary dislocations [J].

Durst, Karsten ;

Backes, Bjoern ;

Franke, Oliver ;

Goeken, Mathias .

ACTA MATERIALIA, 2006, 54 (09) :2547-2555

[6] DISPERSION HARDENING OF COPPER SINGLE CRYSTALS [J].

EBELING, R ;

ASHBY, MF .

PHILOSOPHICAL MAGAZINE, 1966, 13 (124) :805-+

[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] Martensitic transformation of individual grains in low-alloyed TRIP steels [J].

Jimenez-Melero, E. ;

van Dijk, N. H. ;

Zhao, L. ;

Sietsma, J. ;

Offerman, S. E. ;

Wright, J. P. ;

van der Zwaag, S. .

SCRIPTA MATERIALIA, 2007, 56 (05) :421-424

[9]

Johnson K. L., 1987, CONTACT MECH

[10] THERMODYNAMICS AND KINETICS OF MARTENSITIC TRANSFORMATIONS [J].

KAUFMAN, L ;

COHEN, M .

PROGRESS IN METAL PHYSICS, 1958, 7 :165-246

← 1 2 3 →