| VM12耐热钢焊接接头力学性能和微观组织的研究 |
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| 引用本文： | 陈肇宇,刁旺战,王萍.VM12耐热钢焊接接头力学性能和微观组织的研究[J].压力容器,2019(6):6-11. |
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| 作者姓名： | 陈肇宇 刁旺战 王萍 |
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| 作者单位： | 哈尔滨工业大学大科学工程专项建设指挥部暨空间基础科学研究中心;高效清洁燃煤电站锅炉国家重点实验室(哈尔滨锅炉厂有限责任公司) |
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| 摘 要： | 采用热丝TIG的方法制备VM12材料焊接接头,对焊态、焊后退火态以及时效热处理态接头的力学性能和金相组织展开研究。焊后观察到焊缝为马氏体+残余奥氏体组织,且焊缝硬度很高,经退火热处理后焊缝转变为回火马氏体,硬度降至300HV10左右;接头经600℃和650℃时效热处理后,微观组织变化很小,材料高温稳定性较好。
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| 关 键 词： | VM12耐热钢 焊接接头 力学性能 金相组织 |
Study on the Mechanical Properties and Microstructure of VM12 Heat-resistant Steel Butt Joint |
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| Chen Zhaoyu,Diao Wangzhan,Wang Ping.Study on the Mechanical Properties and Microstructure of VM12 Heat-resistant Steel Butt Joint[J].Pressure Vessel Technology,2019(6):6-11. |
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| Authors: | Chen Zhaoyu Diao Wangzhan Wang Ping |
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| Affiliation: | (Space Environment Simulation Research Infrastructure,Harbin Institute of Technology,Harbin 150006,China;State Key Laboratory of Efficient and Clean Coal-fired Utility Boilers(Harbin Boiler Company Limited),Harbin 150046,China) |
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| Abstract: | The VM12 heat-resistant steel welded joint was prepared by Hot-TIG method,and the mechanical properties and microstructure of the joint in as-welded and post-weld annealed and aging treated states were studied.It was observed after welding that the welded joint was composed of martensite and residual austenite and had a very high hardness.The microstructure after annealing heat treatment was transformed to tempered martensite and the hardness dropped to about 300HV10 .There was very small change in the microstructure of VM12 steel welded joint after aging treatment at 600 ℃ and 650 ℃,and the high temperature stability of the material was better. |
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| Keywords: | VM12 heat-resistant steel welded joint mechanicalproperties microstructure |
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