TC4-DT钛合金线性摩擦焊接头组织和力学性能分析
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摘要
针对飞机用典型的TC4-DT钛合金线性摩擦焊接头,开展组织及接头的拉伸、冲击和低周疲劳等力学性能测试。结果表明:TC4-DT钛合金线性摩擦焊接头经过700℃+保温3h的热处理后,接头的室温和高温抗拉强度达到母材的97%以上,室温和低温冲击性能略高于母材,室温低周疲劳性能与母材相当,具有良好的综合力学性能。
The Microstructure, tensile strength, impact property and low-cycle fatigue testing properties were studied for TC4-DT liner friction welded(LFW) joint of the aircraft. Test results show that an excellent properties of weld joint can be obtained after post-weld heat treatment(temperature: 700℃, longtime: 3 h). The room and high tensile strengths of TC4-DT LFW joint can reach more than 97% of TC4-DT base metals, and the impact property of the weld joint is slightly higher than the base metal, the low-cycle fatigue property is close to the TC4-DT base metals.
The Microstructure, tensile strength, impact property and low-cycle fatigue testing properties were studied for TC4-DT liner friction welded(LFW) joint of the aircraft. Test results show that an excellent properties of weld joint can be obtained after post-weld heat treatment(temperature: 700℃, longtime: 3 h). The room and high tensile strengths of TC4-DT LFW joint can reach more than 97% of TC4-DT base metals, and the impact property of the weld joint is slightly higher than the base metal, the low-cycle fatigue property is close to the TC4-DT base metals.
引文
[1]袁鸿,余槐,王金雪,等.TC4-DT钛合金电子束焊接接头的损伤容限性能[J].材料工程,2007(8):17-19.YUAN Hong,YU Huai,WANG Jinxue,et al.The damage tolerance properties of the EBW joint for TC4-DT titanium alloy[J].Materials Engineering,2007(8):17-19.
[2]王新南,朱知寿,童路,等.锻造工艺对TC4-DT和TC21损伤容限型钛合金疲劳裂纹扩展速率的影响[J].稀有金属快报,2008(7):12-16.WANG Xinnan,ZHU Zhishou,TONG Lu,et al.The influence of forging processing on fatigue crack propagation rate of damage-tolerant titanium alloy[J].Rare Metal Letters,2008(7):12-16.
[3]《中国航空材料手册》编辑委员会.中国航空材料手册.第4卷.钛合金、铜合金、粉末冶金及无机涂层材料[M].北京:中国标准出版社,2002.Editorial Board of China Aviation Materials Handbook.China aviation materials handbook.Volume 4.Titanium alloy,copper alloy powder,metallurgical and inorganic coating materials[M].Beijing:Standards Press of China,2002.
[4]VAIRIS A,FROST M.Modelling the linear friction welding of titanium blocks[J].Materials Science and Engineering:A,2000,292(1):8-17.
[5]刘颖,张田仓,张传臣.热处理制度对TA15线性摩擦焊接头组织和性能的影响[J].航空制造技术,2013(16):85-86.LIU Ying,ZHANG Tiancang,ZHANG Chuanchen.Effects of heattreatment on mechanical properties of TA15 linear friction welded joints[J].Aeronautical Manufacturing Technology,2013(16):85-86.
[6]周伟,曲恒磊,赵永庆,等.TC4-DT合金不同热处理后的组织与性能[J].金属热处理,2006,31(6):56-57.ZHOU Wei,QU Henglei,ZHAO Yongqing,et al.Microstructure and mechanical properties of TC4-DT alloy after different heat trentments[J].Heat Treatment of Metals,2006,31(6):56-57.
[7]朱知寿,马少俊,王新南,等.TC4-DT损伤容限型钛合金疲劳裂纹扩展特性的研究[J].钛工业进展,2005,22(6):10-13.ZHU Zhishou,MA Shaojun,WANG Xinnan,et al.Study on fatigue crack propagation rate of TC4-DT damage tolerance titanium alloy[J].Titanium Industry Progress,2005,22(6):10-13.
[8]马铁军,张学军,杨思乾,等.TC4钛合金线性摩擦焊接头的冲击韧性及断口特征[J].航空材料学报,2007,27(6):40-44.MA Tiejun,ZHANG Xuejun,YANG Siqian,et al.Impact toughness and fracture characteristics of linear friction welded TC4 joint[J].Journal of Aeronautical Materials,2007,27(6):40-44.
[9]李辉,赵永庆,曲恒磊,等.损伤容限型TC4-DT合金疲劳裂纹扩展行为研究[J].稀有金属材料与工程,2007,36(6):963-965.LI Hui,ZHAO Yongqing,QU Henglei,et al.Fatigue crack growth behavior of TC4-DT alloy in damage tolerance type[J].Rare Metal Materials and Engineering,2007,36(6):963-965.
[10]WANJARA P,JAHAZI M.Linear friction welding of Ti-6Al-4V:processing,microstructure,and mechanical-property interrelationships[J].Metallurgical and Materials Transactions A,2005,36(8):2149-2164.
[2]王新南,朱知寿,童路,等.锻造工艺对TC4-DT和TC21损伤容限型钛合金疲劳裂纹扩展速率的影响[J].稀有金属快报,2008(7):12-16.WANG Xinnan,ZHU Zhishou,TONG Lu,et al.The influence of forging processing on fatigue crack propagation rate of damage-tolerant titanium alloy[J].Rare Metal Letters,2008(7):12-16.
[3]《中国航空材料手册》编辑委员会.中国航空材料手册.第4卷.钛合金、铜合金、粉末冶金及无机涂层材料[M].北京:中国标准出版社,2002.Editorial Board of China Aviation Materials Handbook.China aviation materials handbook.Volume 4.Titanium alloy,copper alloy powder,metallurgical and inorganic coating materials[M].Beijing:Standards Press of China,2002.
[4]VAIRIS A,FROST M.Modelling the linear friction welding of titanium blocks[J].Materials Science and Engineering:A,2000,292(1):8-17.
[5]刘颖,张田仓,张传臣.热处理制度对TA15线性摩擦焊接头组织和性能的影响[J].航空制造技术,2013(16):85-86.LIU Ying,ZHANG Tiancang,ZHANG Chuanchen.Effects of heattreatment on mechanical properties of TA15 linear friction welded joints[J].Aeronautical Manufacturing Technology,2013(16):85-86.
[6]周伟,曲恒磊,赵永庆,等.TC4-DT合金不同热处理后的组织与性能[J].金属热处理,2006,31(6):56-57.ZHOU Wei,QU Henglei,ZHAO Yongqing,et al.Microstructure and mechanical properties of TC4-DT alloy after different heat trentments[J].Heat Treatment of Metals,2006,31(6):56-57.
[7]朱知寿,马少俊,王新南,等.TC4-DT损伤容限型钛合金疲劳裂纹扩展特性的研究[J].钛工业进展,2005,22(6):10-13.ZHU Zhishou,MA Shaojun,WANG Xinnan,et al.Study on fatigue crack propagation rate of TC4-DT damage tolerance titanium alloy[J].Titanium Industry Progress,2005,22(6):10-13.
[8]马铁军,张学军,杨思乾,等.TC4钛合金线性摩擦焊接头的冲击韧性及断口特征[J].航空材料学报,2007,27(6):40-44.MA Tiejun,ZHANG Xuejun,YANG Siqian,et al.Impact toughness and fracture characteristics of linear friction welded TC4 joint[J].Journal of Aeronautical Materials,2007,27(6):40-44.
[9]李辉,赵永庆,曲恒磊,等.损伤容限型TC4-DT合金疲劳裂纹扩展行为研究[J].稀有金属材料与工程,2007,36(6):963-965.LI Hui,ZHAO Yongqing,QU Henglei,et al.Fatigue crack growth behavior of TC4-DT alloy in damage tolerance type[J].Rare Metal Materials and Engineering,2007,36(6):963-965.
[10]WANJARA P,JAHAZI M.Linear friction welding of Ti-6Al-4V:processing,microstructure,and mechanical-property interrelationships[J].Metallurgical and Materials Transactions A,2005,36(8):2149-2164.