Optimal Process Determination of Gas Tungsten Arc Welding for Large-Thickness TC4 Titanium Alloy Casting and Mechanical Properties of the Joint

ZHU Li; HU Yanan; WU Shengchuan; LI Fei; YU Wenjun; LIN Bo; LI Guangjun

doi:10.11973/jxgccl202205010

Materials and Mechanical Engineering > 2022 > 46(5): 58-63. > DOI: 10.11973/jxgccl202205010

ZHU Li, HU Yanan, WU Shengchuan, LI Fei, YU Wenjun, LIN Bo, LI Guangjun. Optimal Process Determination of Gas Tungsten Arc Welding for Large-Thickness TC4 Titanium Alloy Casting and Mechanical Properties of the Joint[J]. Materials and Mechanical Engineering, 2022, 46(5): 58-63. DOI: 10.11973/jxgccl202205010

Citation:

PDF (3832 KB)

Optimal Process Determination of Gas Tungsten Arc Welding for Large-Thickness TC4 Titanium Alloy Casting and Mechanical Properties of the Joint

1. AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu 610091, China;
2. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China

More Information

Received Date: September 21, 2020
Revised Date: October 18, 2021

Graphical Abstract

Abstract

Abstract

Three interlayer temperature control schemes of continuous welding, welding next layer after welding layer was cooled to room temperature, welding next pass after welding pass was cooled to room temperature, and two annealing temperatures of 730, 600℃ were selected, and the optimal process of gas tungsten arc welding (GTAW) for large-thickness TC4 titanium alloy cast plate was determined by microstructure, tensile properties and fatigue properties. The mechanical properties of welded joint under the optimal process were studied. The results show that the welded joint by welding next layer after welding layer was cooled to room temperature had the smallest weld microstructure and the highest fatigue life, and the welded joint after annealing treatment at 730℃ had better tensile properties; so they were determined as the optimal process. Under the optimal process, the hardness of weld of the GTAW joint was slightly higher than that of base metal, and the joint was a highly matched joint. The joint fractured at base metal during both tension and fatigue processes, but the fatigue cracking resistance of the weld was lower than that of base metal.
- titanium alloy casting,
- gas tungsten arc welding,
- interlayer temperature,
- post-weld annealing treatment,
- fatigue

FullText(HTML)

References (16)

References

[1]	张喜燕,赵永庆,白晨光.钛合金及应用[M].北京:化学工业出版社,2005. ZHANG X Y,ZHAO Y Q,BAI C G.Titanium alloys and applications[M].Beijing:Chemical Industry Press,2005.
[2]	韩忠,赵晖,陈晓风.钛合金焊接凝固结晶控制的研究[J].材料导报,2000,14(4):10-12. HAN Z,ZHAO H,CHEN X F.Study on titanium alloy welding solidification[J].Materials Review,2000,14(4):10-12.
[3]	侯继军,余军,董俊慧.TC4钛合金TIG焊接头组织及力学性能[J].焊接技术,2011,40(4):15-17. HOU J J,YU J,DONG J H.Microstructure and mechanical properties of TIG welded joint of TC4 titanium alloy[J].Welding Technology,2011,40(4):15-17.
[4]	牟刚,华学明,徐小波,等.8 mm厚TC4钛合金TIG、MIG焊接工艺及性能对比研究[J].电焊机,2020,50(4):70-74. MOU G,HUA X M,XU X B,et al.Comparative study on welding procedure and performance of 8 mm thick TC4 titanium alloy with TIG and MIG[J].Electric Welding Machine,2020,50(4):70-74.
[5]	MEHDI B,BADJI R,JI V,et al.Microstructure and residual stresses in Ti-6Al-4V alloy pulsed and unpulsed TIG welds[J].Journal of Materials Processing Technology,2016,231:441-448.
[6]	中国航空材料手册编辑委员会.中国航空材料手册(第四卷)[M]. 2版.北京:中国标准出版社,2001. Editorial Board of China Ariation Material Handbook. China aviation material handbook (volume IV)[M]. 2nd ed. Beijing:China Standard Press, 2001.
[7]	马然,董皕喆,吴世凯,等.薄板钛合金光纤激光-钨极惰性气体保护焊电弧复合焊接工艺研究[J].中国激光,2014,41(5):0503003. MA R,DONG B Z,WU S K,et al.Study on fiber laser-tungsten inert gas hybrid welding of titanium sheet[J].Chinese Journal of Lasers,2014,41(5):0503003.
[8]	曹运明.中厚板钛合金激光-TIG电弧复合热源焊接研究[D].大连:大连理工大学,2011. CAO Y M.Study on laser-TIG arc hybrid welding process of medium titanium alloy plate[D].Dalian:Dalian University of Technology,2011.
[9]	陈永城,张宇鹏,罗子艺,等.TC4钛合金中厚板激光焊接接头显微组织与力学性能[J].应用激光,2017,37(5):662-667. CHEN Y C,ZHANG Y P,LUO Z Y,et al.Microstructure and mechanical properties of TC4 titanium alloy medium plate joints welded by laser beam[J].Applied Laser,2017,37(5):662-667.
[10]	刘茜珂,刘昌奎,彭楚峰,等.ZTC4钛合金精铸件电子束焊接接头组织与疲劳行为研究[J].失效分析与预防,2008,3(3):32-36. LIU X K,LIU C K,PENG C F,et al.Study on microstructure and fatigue behavior of electron-beam welding joints of ZTC4 titanium alloy investment castings[J].Failure Analysis and Prevention,2008,3(3):32-36.
[11]	高峰,倪家强,常荣辉.TC21、TA15、TC18、TC4四种钛合金高压电子束焊接力学性能及微观组织研究[J].航空制造技术,2014,57(增刊1):34-37. GAO F,NI J Q,CHANG R H.Mechanical property and microstructure for high voltage electron beam welded joint of TC21/TA15/TC18/TC4 four kinds of titanium alloy[J].Aeronautical Manufacturing Technology,2014,57(S1):34-37.
[12]	周琦,吴忠,王超宁.TC4钛合金等离子弧焊接接头组织及性能[J].机械制造与自动化,2017,46(2):25-28. ZHOU Q,WU Z,WANG C N.Microstructure and mechanical properties of TC4 titanium alloy plasma arc welded joints[J].Machine Building&Automation,2017,46(2):25-28.
[13]	邹慧,雷娟娟,孙宇博,等.TC4钛合金微束等离子弧焊接接头疲劳性能研究[J].焊接技术,2016,45(11):74-78. ZOU H,LEI J J,SUN Y B,et al.Study on fatigue performance of TC4 titanium alloy micro plasma arc welding joint[J].Welding Technology,2016,45(11):74-78.
[14]	徐德志.大厚板TC4钛合金窄间隙焊接接头组织演变规律及性能强化机制研究[D].成都:西南交通大学,2019. XU D Z.Investigation of microstructure evolution and property strengthening mechanisms of narrow-gap welded great thick TC4 titanium alloy joints[D].Chengdu:Southwest Jiaotong University,2019.
[15]	左晓婷,张鹏,刘鸿彦,等.网篮组织TC4 ELI钛合金TIG焊接接头的性能分析[J].中国钛业,2018(4):34-38. ZUO X T, ZHANG P, LIU H Y, et al. Performance analysis of TIG welded joint of TC4 ELI titanium alloy with basket-weave microstructure[J]. China Titanium Industry, 2018(4):34-38.
[16]	魏晓棠.钛合金的钨极氩弧焊[J].钛工业进展,2008,25(6):38-41. WEI X T.TIG welding of titanium alloys[J].Titanium Industry Progress,2008,25(6):38-41.论文摘要的写作要求摘要是科技论文的重要组成部分,是以提供文献内容梗概为目的,不加评论和补充解释,简明、确切地记述论文重要内容的短文。其基本要素包括研究的目的、方法、结果和结论。摘要应具有独立性和自含性,并拥有与论文同等量的主要信息,即不阅读论文的全文,就能获得必要的信息。摘要的主要功能是:1使读者了解论文的主要内容。现代科技信息浩如烟海,读者检索到论文题名后是否会继续阅读论文的其他部分,主要就是通过阅读摘要来进行判断。2为科技情报人员和计算机检索提供方便。论文发表后,文摘杂志和数据库对摘要可以不做修改或稍作修改而直接利用,从而避免他人编写摘要可能产生的误解、欠缺甚至错误。可以这样说,摘要质量的高低,直接影响着论文的被利用情况和期刊的知名度。编写摘要的注意事项1.摘要一般应说明研究工作的目的、试验方法、结果和最终结论等,而且重点是结果和结论。要采用第三人称的写法,不必使用"本文"、"作者"等作为主语。2.摘要中有数据、有结论,是一篇完整的短文,可以独立使用,可以引用,也可以用于工艺推广。3.结构严谨,表达简明,语义确切。摘要先写什么,后写什么,要按逻辑顺序来安排。句子之间要上下连贯,互相呼应。慎用长句,句型要力求简单。每句话要表意明白,无空泛、笼统、含混之词。4.除了实在无变通办法可用以外,摘要中不同图、表、化学结构式、非公知公用的符号和术语。5.缩略语、略称、代号,除了相近专业的读者也能清楚理解的以外,在首次出现时必须要加以说明。6.英文题名以短语为主要形式,尤以名词短语最常见,即题名基本上有1个或几个名称加上其前缀和(或)后置定语构成。短语型题名要确定好中心词,再进行前后修饰。各个词的顺序很重要,词序不当,会导致表达不准\.7.中文摘要一般不易超过200~300字;外文摘要不宜超过250个实词。如遇特殊需要,字数可以略多。

Cited By

Get Citation

PDF

XML

Article views (8) PDF downloads (6)

Turn off MathJax

Article Contents

Abstract

References

Optimal Process Determination of Gas Tungsten Arc Welding for Large-Thickness TC4 Titanium Alloy Casting and Mechanical Properties of the Joint

Abstract

References

Catalog

Export File

Citation

Format

Content