Properties of Titanium Alloy/Stainless Steel Joint with Ta+Cu Composite Interlayer by Different Diffusion Welding Process
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摘要: 分别在常规工艺(20℃·s-1速率升温至1 000℃,保温1 200 s,压力6.7 MPa,空冷)和阶梯工艺(20℃·s-1速率升温至1 050℃,停留2 s后以10℃·s-1速率降温至950℃,此阶段压力2.8 MPa,然后在6.7 MPa压力下保温1 200 s,空冷)下,以加钽+铜为复合中间层对TC4钛合金与15-5PH不锈钢进行真空扩散焊,研究了接头的组织和性能。结果表明:复合中间层可阻碍钛合金与不锈钢间元素互扩散;阶梯工艺下接头的抗拉强度为550 MPa,高于常规工艺(390 MPa),这与柯肯达尔扩散空洞小且浅、焊后复合中间层厚度较小以及铜/钽界面连接质量较高有关。Abstract: TC4 titanium alloy and 15-5PH stainless steel was vacuum diffusion welded with Ta+Cu as composite interlayer under conventional process (raise temperature to 1 000℃ at rate of 20℃·s-1, holding for 1 200 s with pressure of 6.7 MPa, air cooling) and step process (raise temperature to 1 050℃ at rate of 20℃·s-1, holding for 2 s, then lower temperature to 950℃ at rate of 10℃·s-1 with pressure of 2.8 MPa, and holding at a pressure of 6.7 MPa for 1 200 s, air cooling). The microstructure and properties of the joint were studied. The results show that the composite interlayer could prevent the element diffusion between titanium alloy and stainless steel. The tensile strength of the joint under step process was 550 MPa, and was higher than 390 MPa under conventional process, which was related to the small and shallow Kirkendal diffusion cavity, small thickness of the composite interlayer and good banding quality of Cu/Ta interface.
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Keywords:
- TC4 alloy /
- 15-5PH steel /
- vacuum diffusion welding /
- composite interlayer
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[1] 李亚江.焊接冶金学-材料焊接性[M].北京:机械工业出版社,2010:183-186. LI Y J. Welding metallurgy-Weldability of materials[M]. Beijing:China Machine Press, 2010:183-186.
[2] 王廷,张秉刚,陈国庆,等. TA15钛合金与304不锈钢的电子束焊接[J].焊接学报,2010,31(5):53-56. WANG T, ZHANG B G, CHEN G Q, et al. Electron beam welding of TA15 titanium alloy and 304 stainless steel[J].Transactions of the China Welding Institution, 2010, 31(5):53-56.
[3] CHEEPU M M, MUTHUPANDI V, SIVAPRASAD K, et al. The influence of aluminum intermediate layer in dissimilar friction welds[J]. International Journal of Materials Research,2014,105(4):350-357.
[4] 秦优琼,于治水.TC4钛合金/不锈钢真空钎焊接头的界面组织及抗剪强度[J].机械工程材料,2012,36(11):29-31. QIN Y Q, YU Z S. Interfacial microstructure and shear strength of TC4 titanium alloy/stainless steel vacuum brazed joint[J]. Materials for Mechanical Engineering,2012,36(11):29-31.
[5] 宋庭丰,蒋小松,莫德锋,等.不锈钢和钛合金异种金属焊接研究进展[J].材料导报,2015,29(11):81-87. SONG T F, JIANG X S, MO D F, et al. A survey on dissimilar welding of stainless steel and titanium alloy[J]. Materials Reports,2015,29(11):81-87.
[6] 刘夫,李士凯,蒋鹏,等.钛/钢异种金属焊接技术的研究进展[J].材料开发与应用,2020,35(2):67-74. LIU F, LI S K, JIANG P, et al. Development progress of welding technologies of titanium/steel dissimilar metal[J]. Development and Application of Materials,2020,35(2):67-74.
[7] 张秉刚,张春光,陈国庆,等.5A02/0Cr18Ni9异种金属电子束焊接接头组织与性能[J].焊接学报,2010,31(5):5-8. ZHANG B G, ZHANG C G, CHEN G Q, et al. Microstructure and properties of 5A02/0Cr18Ni9 dissimilar metal electron beam welded joint[J].Transactions of the China Welding Institution, 2010, 31(5):5-8.
[8] 许天才,彭晓东,姜军伟,等.钛合金连接异种材料新技术的研究应用[J].稀有金属,2014,38(4):711-719. XU T C, PENG X D, JIANG J W, et al. Progress in welding of titanium alloy and dissimilar materials[J]. Chinese Journal of Rare Metals,2014,38(4):711-719.
[9] CHEN S, LI L, CHEN Y, et al. Joining mechanism of Ti/Al dissimilar alloys during laser welding brazing process[J]. Journal of Alloys&Compounds,2011,509(3):891-898.
[10] 熊进辉,吴敏华,安飞鹏,等.钛/钢异种金属电子束焊接技术的发展现状[J].热加工工艺,2016,45(17):13-15. XIONG J H, WU M H, AN F P, et al. Development status of electron beam welding technology of titanium/steel dissimilar metal[J]. Hot Working Technology,2016,45(17):13-15.
[11] 祝要民,李青哲,邱然锋,等.钛/钢异种金属焊接的研究现状[J].电焊机,2016,46(11):78-82. ZHU Y M, LI Q Z, QIU R F, et al. Researching status of dissimilar metal welding of titanium and steel[J]. Electric Welding Machine,2016,46(11):78-82.
[12] 邵甄胰,陈天赐,宋庭丰,等.保温时间对316L不锈钢与TC4钛合金扩散焊组织与性能的影响[J].材料热处理学报,2017,38(5):79-85. SHAO Z Y, CHEN T C, SONG T F, et al. Effects of holding time on microstructure and properties of weld joints of 316L stainless steel and TC4 titanium alloy by diffusion welding[J]. Transactions of Materials and Heat Treatment, 2017,38(5):79-85.
[13] 吴宪吉,田娟娟,张科,等.Ti/Al异种金属焊接研究进展[J].焊接技术,2015,44(10):1-5. WU X J, TIAN J J, ZHANG K, et al. Research progress of Ti/Al dissimilar metal welding[J]. Welding Technology, 2015, 44(10):1-5.
[14] 刘彦峰,白佳铭,张美丽,等.TC4钛合金/304不锈钢异种材料扩散焊研究[J].兵器材料科学与工程,2017,40(3):86-90. LIU Y F, BAI J M, ZHANG M L, et al. Diffusion bonding of TC4 titanium alloy and 304 stainless steel[J]. Ordnance Material Science and Engineering, 2017,40(3):86-90.
[15] 吕攀,王克鸿,朱和国.钛合金与不锈钢异种金属焊接的研究现状[J].热加工工艺,2017,46(13):26-32. LV P, WANG K H, ZHU H G. Research status of titanium alloy and stainless steel dissimilar metal welding[J]. Hot Working Technology,2017,46(13):26-32.
[16] 邓永强.纯钛及Ti-6Al-4V合金及其与304不锈钢及Inconel镍基合金的连接研究[D].重庆:重庆大学, 2016. DENG Y Q. Investigation on the joining of CP-Ti, Ti-6Al-4V with similar and 304 stainless steel, Inconel Ni-based alloy dissimilar materials[D]. Chongqing:Chongqing University, 2016. [17] SREH A, FA K, PN A, et al. Interlayer thickening for development of laser-welded Ti-SS joint strength[J]. Optics&Laser Technology, 2019, 112:379-394.
[18] 高旺旺. TA2/S316扩散焊接头组织与性能研究[D].济南:山东大学, 2020. GAO W W. Study on microstructure and properties of TA2/S316 diffusion welding joints[D]. Jinan:Shandong University, 2020.
[19] KUNDU S, CHATTERJEE S, MISHRA D O. Interface microstructure and strength properties of the diffusion-bonded joints of titanium/Cu interlayer/stainless steel[J]. Metallurgical&Materials Transactions A, 2008,39:2106-2114.
[20] KUNDU S, CHATTERJEE S. Interface microstructure and strength properties of the diffusion-bonded joints of titanium/Cu interlayer/stainless steel[J]. Metallurgical&Materials Transactions A, 2008, 527(10/11):2714-2719.
[21] 赵蕾.钛合金与不锈钢的激光焊接研究[D].镇江:江苏科技大学,2016. ZHAO L. Laser welding of titanium alloy and stainless steel[D]. Zhenjiang:Jiangsu University of Science and Technology,2016.
[22] 李鹏,李京龙,熊江涛,等.TA2/Ni+Nb中间层/1Cr18Ni9Ti扩散焊接头的组织与性能[J].航空材料学报,2010,30(5):25-29. LI P, LI J L, XIONG J T, et al. Microstructure and properties of TA2/Ni+Nb interlayer/1Cr18Ni9Ti diffusion welded joint[J]. Journal of Aeronautical Materials, 2010,30(5):25-29.
[23] 陈一帆,张占领,邱然锋.以铌+铜为复合中间层扩散焊接钛合金/不锈钢接头的组织与性能[J].机械工程材料,2018,42(10):77-80. CHEN Y F, ZHANG Z L, QIU R F. Microstructure and property of diffusion welded titanium alloy/stainless steel joint with Nb and Cu as composite interlayer[J].Materials for Mechanical Engineering,2018,42(10):77-80.
[24] LI P, LI J L, XIONG J T. Diffusion bonding titanium to stainless steel using Nb/Cu/Ni multi-interlayer[J]. Materials Characterization, 2013, 68:82-87.
[25] 孙荣禄,张九海,黄喜东.中间过渡金属V+Cu对钛合金与不锈钢扩散焊接头性能的影响[J].焊接,1997(2):2-6. SUN R L,ZHANG J H, HUANG X D. Influence of transition metal V+Cu on properties of diffusion bonding of titanium alloy and stainless steel[J].Welding&Joining,1997(2):2-6.
[26] 尹孝辉,李美栓,王阳,等.连接温度、压力和保温时间对Ti3SiC2/Ni扩散连接接头性能的影响[J].稀有金属材料与工程,2007(增刊2):461-464. YIN X H, LI M S, WANG Y, et al. Effects of bonding temperature,pressure and holding time on the properties of Ti3SiC2/Ni diffusion bonded joints[J]. Rare Metal Materials and Engineering,2007(S2):461-464.
[27] 杨睿,李世春,宋玉强.Al/Cu扩散偶相界面的实验研究[J].中国石油大学学报(自然科学版),2007(2):110-113. YANG R, LI S C, SONG Y Q. Experimental study on interface of Al/Cu diffusion couple[J]. Journal of China University of Petroleum, 2007(2):110-113.
[28] 易杰,李落星,刘开勇,等.焊丝成分对6061-T6铝合金双脉冲MIG焊缝组织与性能的影响[J].兵器材料科学与工程,2015,38(3):26-30. YI J, LI L X, LIU K Y, et al. Effect of welding wire compositions on microstructures and mechanical properties of double pulsed MIG welding joint of 6061-T6 aluminum alloy[J]. Ordnance Material Science and Engineering,2015,38(3):26-30.
[29] SEQUEIRA C A C, AMARAL L. Role Kirkendall effect in diffusion processes in solids[J]. Transactions of Nonferrous Metals Society of China, 2014, 24(1):1-11.
[30] 陈一帆.不锈钢与钛合金加中间层的扩散焊接[D].洛阳:河南科技大学,2018. CHEN Y F. Diffusion welding of stainless steel and titanium alloy with intermediate layer[D]. Luoyang:Henan University of Science and Technology, 2018.
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