High temperature ageing behaviour of a duplex stainless steel

被引：118

作者：

Ghosh, S. K. ^{[1
]}

Mondal, S. ^{[1
]}

机构：

[1] Bengal Engn & Sci Univ, Dept Met & Mat Engn, Howrah 711103, W Bengal, India

来源：

MATERIALS CHARACTERIZATION | 2008年 / 59卷 / 12期

关键词：

Duplex stainless steel; Ageing; Microstructure; Sigma phase; Tensile properties;

D O I：

10.1016/j.matchar.2008.04.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present study concerns the influence of ageing parameters on the microstructure and mechanical properties of a duplex stainless steel. Microstructural evolution is extremely sensitive to chi and sigma phase precipitation during ageing treatment. The precipitation of chi phase increases with the increase of ageing time from 15 min to 120 min at 900 degrees C. The precipitation rate of secondary phases in 900 degrees C is faster than that at 700 degrees C. High hardness is directly related to the abundant chi and sigma phase precipitation in the microstructure. Sigma phase was completely dissolved by heat treatment at 1000 degrees C; the mechanical properties were then influenced by the sigma-free equivalent volume fractions of ferrite and austenite. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：1776 / 1783

页数：8

共 24 条

[1] ELEMENTAL PARTITIONING AND MICROSTRUCTURAL DEVELOPMENT IN DUPLEX STAINLESS-STEEL WELD METAL [J].

ATAMERT, S ;

KING, JE .

ACTA METALLURGICA ET MATERIALIA, 1991, 39 (03) :273-285

[2] Influence of isothermal aging on secondary phases precipitation and toughness of a duplex stainless steel SAF 2205 [J].

Calliari, I. ;

Zanesco, M. ;

Ramous, E. .

JOURNAL OF MATERIALS SCIENCE, 2006, 41 (22) :7643-7649

[3] The effect of high-temperature exposure on the microstructural stability and toughness property in a 2205 duplex stainless steel [J].

Chen, TH ;

Weng, KL ;

Yang, JR .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 338 (1-2) :259-270

[4]

Dupoiron F, 1996, SCAND J METALL, V25, P95

[5]

DUPREZ L, 2000, MAT TECHNOL STEEL RE, V10, P417

[6] Effects of nitrogen and high temperature aging on σ phase precipitation of duplex stainless steel [J].

Huang, CS ;

Shih, CC .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 402 (1-2) :66-75

[7] DISTINGUISHING BETWEEN CHI-PHASES AND SIGMA-PHASES IN DUPLEX STAINLESS-STEELS USING POTENTIOSTATIC ETCHING [J].

JACKSON, EMLEM ;

DEVISSER, PE ;

CORNISH, LA .

MATERIALS CHARACTERIZATION, 1993, 31 (04) :185-190

[8] Effect of Mo substitution by W on high temperature embrittlement characteristics in duplex stainless steels [J].

Kim, SB ;

Paik, KW ;

Kim, YG .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 247 (1-2) :67-74

[9] Effect of solution treatment on the transformation behaviour of cold-rolled duplex stainless steels [J].

Lai, JKL ;

Wong, KW ;

Li, DJ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1995, 203 (1-2) :356-364

[10] Effect of isothermal treatment of SAF 2205 duplex stainless steel on migration of δ/γ interface boundary and growth of austenite [J].

Lee, KM ;

Cho, HS ;

Choi, DC .

JOURNAL OF ALLOYS AND COMPOUNDS, 1999, 285 (1-2) :156-161

← 1 2 3 →