Microstructure characterization and hardness distribution of 13Cr4Ni multipass weld metal

被引：31

作者：

Amrei, Mohsen Mokhtabad ^{[1
]}

Monajati, Hossein ^{[1
]}

Thibault, Denis ^{[2
]}

Verreman, Yves ^{[3
]}

Germain, Lionel ^{[4
,5
]}

Bocher, Philippe ^{[1
]}

机构：

[1] Ecol Technol Super, Montreal, PQ H3C 1K3, Canada

[2] Inst Rech Hydro Quebec, Montreal, PQ, Canada

[3] Ecole Polytech Montreal, Montreal, PQ, Canada

[4] Univ Lorraine, Lab Etude Microstruct & Mecan Mat LEM3, UMR 7239, F-57045 Metz, France

[5] Univ Lorraine, Labex DAMAS, F-57045 Metz, France

来源：

MATERIALS CHARACTERIZATION | 2016年 / 111卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

13Cr4NiMo martensitic stainless steels; Multipass weld microstructure; Heat affected zone; Reformed austenite; Tempering; MECHANICAL-PROPERTIES; RESIDUAL-STRESS; STEEL WELD; AUSTENITE; TRANSFORMATION;

D O I：

10.1016/j.matchar.2015.11.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multipass welding is a common method for fabrication and repairs of large industrial steel parts. In the hydroelectric industry these parts are commonly made with 13Cr4Ni steels that present outstanding performances. In this research the microstructures and crystallographic textures of a multipass weld have been studied. The microstructure was found to be complex and heterogeneous, consisting of several regions affected by adjacent weld passes. The study showed that austenite parent grains modification happened in areas close to the subsequent weld passes. However, parallel and low angle interface laths were observed inside martensite sub-blocks over different regions. The hardness profile was explained by overlaying the simple three regions heat affected zone. In some regions a tempering heat treatment effect was observed while in some other regions a double-quenching has happened. (C) 2015 Elsevier Inc. All rights reserved.

引用

页码：128 / 136

页数：9

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