| 焊后热处理对SA517 Gr.F焊接接头力学性能与组织的影响 |
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| 引用本文： | 李娟,王璐璐,于杰,刘鸿鹏. 焊后热处理对SA517 Gr.F焊接接头力学性能与组织的影响[J]. 核动力工程, 2020, 41(6): 202-206. DOI: 10.13832/j.jnpe.2020.06.0202 |
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| 作者姓名： | 李娟 王璐璐 于杰 刘鸿鹏 |
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| 作者单位： | 山东核电设备制造有限公司,山东海阳,265118;烟台市核电设备工程技术研究中心,山东海阳,265118;山东省核电设备制造工程技术研究中心,山东海阳,265118,山东核电设备制造有限公司,山东海阳,265118;烟台市核电设备工程技术研究中心,山东海阳,265118;山东省核电设备制造工程技术研究中心,山东海阳,265118,山东核电设备制造有限公司,山东海阳,265118;烟台市核电设备工程技术研究中心,山东海阳,265118;山东省核电设备制造工程技术研究中心,山东海阳,265118,山东核电设备制造有限公司,山东海阳,265118;烟台市核电设备工程技术研究中心,山东海阳,265118;山东省核电设备制造工程技术研究中心,山东海阳,265118 |
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| 摘 要： | 为更好地掌握焊后热处理(PWHT)对SA517Gr.F调质钢焊接接头性能的影响,对SA517Gr.F调质钢手工电弧焊(SMAW)焊接接头进行了焊态(AW)与PWHT试样力学性能和组织分布特征的对比分析研究。分析结果表明:PWHT与AW相比,焊接接头室温拉伸和360℃高温拉伸的抗拉强度均有所下降;焊缝和热影响区(HAZ)峰值硬度降低。PWHT降低了焊接接头的残余应力,但未能改善焊缝和HAZ的冲击性能。建议对于SA517 Gr.F调质钢若满足ASME规范案例N-71-18条件,可免除焊后热处理。
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| 关 键 词： | SA517 Gr.F 焊接接头 焊后热处理(PWHT) 力学性能 |
Effect of PWHT on Mechanical Properties and Microstructure of SA517Gr.F Welded Joint |
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| Li Juan,Wang Lulu,Yu Jie,Liu Hongpeng. Effect of PWHT on Mechanical Properties and Microstructure of SA517Gr.F Welded Joint[J]. Nuclear Power Engineering, 2020, 41(6): 202-206. DOI: 10.13832/j.jnpe.2020.06.0202 |
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| Authors: | Li Juan Wang Lulu Yu Jie Liu Hongpeng |
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| Abstract: | In order to better understand the effect of PWHT (post weld heat treatment) on SA517 Gr.F quenched and tempered steel welded joint, the mechanical properties and microstructure distribution characteristics of SA517 Gr.F welded joint by SMAW (shielding metal arc welding) before and after PWHT were compared and analyzed. The analysis results show that, compared with that of as-weld welded joint, both the room temperature and 360℃ high temperature tensile properties of the welded joint decrease, and the peak micro-hardness of weld metal and HAZ also decrease after PWHT. The residual stress of the welded joint is decreased by PWHT, however, the impact properties of the weld and HAZ are not improved. It is suggested that PWHT can be exempted for SA517 Gr.F quenched and tempered steel if the requirements of ASME Code Case N-71-18 can be satisfied. |
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