Mechanical properties of 9Cr-1W reduced activation ferritic martensitic steel weldment prepared by electron beam welding process

被引：25

作者：

Das, C. R. ^{[1
]}

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

Sam, Shiju ^{[2
]}

Mastanaiah, P. ^{[3
]}

Chaitanya, G. M. S. K. ^{[1
]}

Bhaduri, A. K. ^{[1
]}

Jayakumar, T. ^{[1
]}

Murthy, C. V. S. ^{[3
]}

Kumar, E. Rajendra ^{[2
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Kalpakkam 603102, Tamil Nadu, India

[2] Inst Plasma Res, Gandhinagar, India

[3] Def Res & Dev Lab, Hyderabad, Andhra Pradesh, India

来源：

FUSION ENGINEERING AND DESIGN | 2014年 / 89卷 / 11期

关键词：

Electron beam welding; 9Cr-1W RAFM steel; Martensite; Toughness and DBTT; BEHAVIOR; MICROSTRUCTURE; STRENGTH; ISSUES; JOINTS;

D O I：

10.1016/j.fusengdes.2014.07.001

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Microstructure and mechanical properties of the weldments prepared from 9Cr-1W reduced activation ferritic martensitic (RAFM) steel using electron beam welding (EBW) process were studied. Microstructure consists of tempered lath martensite where precipitates decorating the boundaries in post weld heat treated (PWHT) condition. Lath and precipitate sizes were found to be finer in the weld metal than in base metal. Accordingly, hardness of the weld metal was found to be higher than the base metal. Tensile strength of the cross weldment specimen was 684 MPa, which was comparable with the base metal tensile strength of 670 MPa. On the other hand, DBTT of 9Cr-1W weld metal in as-welded condition is similar to that reported for TIG weld metal in PWHT condition. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：2672 / 2678

页数：7

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