Journal
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
Volume 52, Issue 5, Pages 1581-1587Publisher
SPRINGER
DOI: 10.1007/s11661-021-06225-5
Keywords
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Funding
- National Natural Science Foundation of China [U20A20277, 51861130361, 51861145312, 51850410522, 52050410341, 52011530180]
- Newton Advanced Fellowship by the Royal Society [RP12G0414]
- Royal Academy of Engineering [TSPC1070]
- Special Fund for Key Program of Science and Technology of Liaoning Province [2019JH1/10100014]
- Fundamental Research Fund for Central Universities [N2025025]
- Regional Innovation Joint Fund of Liaoning Province [2020-YKLH-39]
- Natural Science Foundation of Liaoning [2019KF0502]
- Xingliao Talents Program [XLYC1807024, XLYC1802024]
- Jiangyin Xingcheng Special Steel Works Co., Ltd.
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In this study, the effect of post-weld heat treatment on the soft zone of 1.25Cr-0.5Mo steel welded joint was systematically studied through quantitative analysis of characteristics such as grain size, carbide density, volume fraction of carbides, and hardness distribution using scanning electron microscopy and microhardness testing. The results indicate that ferrite grain growth, carbide coarsening, and alloying element segregation are the main factors contributing to variations in hardness.
In the present study, the effect of post-weld heat treatment on the soft zone of 1.25Cr-0.5Mo steel welded joint has been systematically studied. Outstanding features of the soft zone, including grain size, number density of carbides, volume fraction of carbides, and hardness distribution, are quantitatively analyzed by means of scanning electron microscopy and a microhardness testing. Results show that ferrite grain growth, carbide coarsening, and alloying element segregation are main factors accounting for hardness variations.
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