Study on microstructure and mechanical properties of direct diffusion bonded low-carbon RAFM steels

被引：22

作者：

Chen, Jianguo ^{[1
,2
]}

Liu, Chenxi ^{[1
]}

Wei, Chen ^{[2
]}

Liu, Yongchang ^{[1
]}

Li, Huijun ^{[1
]}

机构：

[1] Tianjin Univ, Sch Mat Sci & Engn, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300350, Peoples R China

[2] Tianjin Special Equipment Inspect Inst, Tianjin 300192, Peoples R China

来源：

JOURNAL OF MANUFACTURING PROCESSES | 2019年 / 43卷

基金：

中国国家自然科学基金;

关键词：

Low-carbon RAFM steel; Diffusion bonding; Microstructure; Mechanical properties; HEAT-AFFECTED ZONE; CLAM/CLAM STEELS; CREEP DAMAGE; IV CRACKING; BEHAVIOR; PHASE; DEFORMATION; EVOLUTION; TANTALUM; KINETICS;

D O I：

10.1016/j.jmapro.2019.05.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The diffusion bonding process, microstructure and mechanical performance of low-carbon reduced activation ferritic/martensitic (RAFM) steel were studied. It indicated that the increase in bonding temperature, pressure and time would be beneficial to refine the microstructure of the bonded joint. The microstructure after diffusion bonding was examined using SEM and TEM. Reliable diffusion bonded joint of large-sized low-carbon RAFM steels was obtained in a vacuum diffusion bonding equipment. The fracture all took place in the base materials during tensile tests, and the joint exhibited higher tensile strength than parent materials. The martensitic lath close to the joint was finer than that in the matrix, and the M23C6 carbides were precipitated densely along packet and lath boundaries upon the subsequent heat treatment. In addition, the joint exhibited excellent impact performance.

引用

页码：192 / 199

页数：8

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