Investigation on the microstructure and mechanical properties of large-tube forging manufactured by additive forging

被引：1
作者：
Wang, Bing [1 ,2 ,3 ]
Zhang, Hong-Lin [1 ,3 ]
Xu, Bin [1 ,3 ]
Sun, Ming-Yue [1 ,3 ]
Li, Dian-Zhong [1 ,3 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China
[3] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
来源：
MATERIALS RESEARCH EXPRESS | 2024年 / 11卷 / 08期
基金：
中国国家自然科学基金;
关键词：
alloy steel; hot-compression bonding; additive forging; mechanical properties; microstructure; DYNAMIC RECRYSTALLIZATION; STAINLESS-STEEL; EVOLUTION; DEFORMATION; STRENGTH; BEHAVIOR; VACUUM; FLOW;
D O I：
10.1088/2053-1591/ad6402
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Large-tube forgings were formed using nine layers of continuous-casting billet made from 15CrNi3MoV alloy steel via additive forging. The interfacial microstructural evolution under different hot-compression bonding temperatures and strains was investigated using optical microscopy, scanning electron microscopy, and electron backscatter diffraction. The tensile properties of the hot-compression-bonded and tube-forged samples were also evaluated. The results showed that as the hot-compression bonding temperature and strain increased, the bonding interface gradually disappeared and the voids at the bonding interface closed. Finally, the interface was replaced with recrystallised grains. The tensile properties of the hot-compression-bonded samples at different temperatures and strains were identical. The tensile properties of the interface and base samples of the tube forging were comparable, and the fracture morphologies were consistent. The fracture position of the large tensile sample with a length of 1000 mm containing three original interfaces is the base, indicating the complete metallurgical bonding of the forging.
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页数：12
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