申佳林,朱学儒,魏志坚,梁宇,梁益龙,江飞龙,肖志祥.焊后热处理对GH4169合金闪光焊接接头组织与性能的影响[J].稀有金属材料与工程,2018,47(12):3839~3847.[Jia-lin Shen,Xue-ru Zhu,Zhi-jian Wei,Yu Liang,Yi-long Liang,Fei-long Jiang,Zhi-xiang Xiao.Influence of Post-Weld Heat Treatment on Microstructure and Mechanical Properties of GH4169 Alloy Flash Butt Welded Joint[J].Rare Metal Materials and Engineering,2018,47(12):3839~3847.]
焊后热处理对GH4169合金闪光焊接接头组织与性能的影响
投稿时间:2017-03-24  修订日期:2017-05-22
中文关键词:  GH4169合金  闪光焊  热处理  预变形  力学性能
基金项目:国家自然科学基金(No. 51461007);贵州省自然科学基金(Nos. [2014]2003, [2015]3012)
中文摘要:
      本文以GH4169高温合金闪光焊接件为研究对象,研究了热处理对焊缝试样的组织与力学性能的影响规律。结果表明,在焊接热量的作用下强化相γ′′、γ′发生回溶,致使焊接区的强度、硬度均明显低于基体。通过固溶处理后基体的强度降低到和焊缝试样一致,可实现拉伸变形过程中焊接区与基体的均匀变形。对焊缝试样在固溶前和固溶后进行1.2%拉伸塑性变形,经过时效处理(720 ℃8 h(60 ℃/h)-620 ℃8 h AC(空冷))后发现,少量塑性变形对其力学性能几乎没有影响。经固溶时效处理后焊缝试样拉伸强度指标与基体材料相比变化不大,但塑性指标低于基体试样,这与其热影响区存在粗大晶粒有关。
Influence of Post-Weld Heat Treatment on Microstructure and Mechanical Properties of GH4169 Alloy Flash Butt Welded Joint
英文关键词:GH4169 alloy  Flash butt welding  Heat treatment  Pre-deformation  Mechanical properties
英文摘要:
      Samples of flash butt welded GH4169 alloy were investigated in this research. Experimental results indicate that redissolution happened to the strengthening phase γ″ and γ′ under the welding heat, so that the strength and microhardness of the weldingSzone are lower than that of the base metal (BM). After solid solution treatment, the strength of the BM is reduced to the same as that of the weldents, the uniform deformation between the welding zone and the BM can be realized during tensile deformation. The 1.2% tensile plastic deformation was carried out before or after solid solution on the weldments respectively, after completing aging heat treatment (720 ℃8 h(60 ℃/h)-620 ℃8 h AC (air cooling)), the tensile results show that a small amount of plastic deformation has little effect on its mechanical properties. After solution-ageingStreatment, the tensile strength of the pre-deformation weldments is similar to that of the BM, but the plastic index is lower, this is related to the coarse grains in the welding zone.
作者单位E-mail
申佳林 贵州大学材料与冶金学院 943651683@qq.com 
朱学儒 贵州大学材料与冶金学院  
魏志坚 贵州安大航空锻造有限责任公司  
梁宇 贵州大学材料与冶金学院 xq.liangyu@126.com 
梁益龙 贵州大学材料与冶金学院  
江飞龙 贵州安大航空锻造有限责任公司  
肖志祥 贵州安大航空锻造有限责任公司  
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