TB2钛合金动态力学性能及绝热剪切敏感性研究
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摘要
研究不同热处理制度对TB2钛合金的组织结构和动态力学性能的影响,利用分离式霍普金森压杆(SHPB)装置,对圆柱形、帽型两种样品进行室温动态压缩实验,进一步研究不同的组织结构对TB2钛合金动态力学性能的影响。结果表明:相变点以上的固溶处理使TB2合金平均晶粒尺寸增大;而相变点以下的固溶时效处理使晶粒内部析出大量的α相,材料强度明显上升。室温动态压缩试验中,在不同应变率加载条件下,固溶时效的样品比固溶的样品屈服强度高,冲击吸收功高;而对于不同冲击速度条件下,固溶时效的样品不易于发生绝热剪切,承载能力强。
In order to reveal the influence of the heat treatment on the dynamic mechanical properties of TB2 titanium alloy,the dynamic properties of cylinder and hat- shaped specimens were carried out by Split Hopkinson Pressure Bar(SHPB). The relationship between microstructure and dynamic mechanical properties was further investigated. The results show that the average grain size of TB2 titanium alloy increases when the solution temperature is higher than the beta-transus point. On the other hand,when the solution temperature is lower than beta-transus point,the content of α phase in β grains increases during the aging treatment,which leads to the increase of tensile strength of TB2 titanium alloy. The experiments of dynamic compression test performed under different strain rates indicate that the samples after solution treatment and aging below betatransus point exhibit higher yield strength and shock absorb energy than the samples after solution treatment. And the experiments performed under different impacting rates reveal that the samples after solution treatment and aging exhibit lower adiabatic shear sensitivity and higher impacting capacity.
In order to reveal the influence of the heat treatment on the dynamic mechanical properties of TB2 titanium alloy,the dynamic properties of cylinder and hat- shaped specimens were carried out by Split Hopkinson Pressure Bar(SHPB). The relationship between microstructure and dynamic mechanical properties was further investigated. The results show that the average grain size of TB2 titanium alloy increases when the solution temperature is higher than the beta-transus point. On the other hand,when the solution temperature is lower than beta-transus point,the content of α phase in β grains increases during the aging treatment,which leads to the increase of tensile strength of TB2 titanium alloy. The experiments of dynamic compression test performed under different strain rates indicate that the samples after solution treatment and aging below betatransus point exhibit higher yield strength and shock absorb energy than the samples after solution treatment. And the experiments performed under different impacting rates reveal that the samples after solution treatment and aging exhibit lower adiabatic shear sensitivity and higher impacting capacity.
引文
[1]付艳艳,宋月清,惠松骁,等.航空用钛合金的研究与应用进展[J].稀有金属,2007,30(6):850-856.
[2]BOYER R R.Titanium for aerospace:Rationale and applications[J].Advanced Performance Materials,1995,2(4):349-368.
[3]BOYER R R,BRIGGS R D.The use ofβtitanium alloys in the aerospace industry[J].Journal of Materials Engineering&Performance,2005,14(6):681-685.
[4]FROES F H,SURYANARAYANA C,ELIEZER D.Synthesis,properties and applications of titanium aluminides[J].Journal of Materials Science,1992,27(19):5113-5140.
[5]JAMES C WILLIAMS,EDGAR A STARKE JR.Progress in structural materials for aerospace systems 1[J].Acta Materialia,2003,51(19):5775-5799.
[6]汪建林.高强度β钛合金的发展和应用[J].上海钢研,2001(2):25-33.
[7]杨冬雨,付艳艳,惠松骁,等.高强高韧钛合金研究与应用进展[J].稀有金属,2011,35(4):575-580.
[8]毛小南,赵永庆,杨冠军.国外航空发动机用钛合金的发展现状[J].稀有金属快报,2007,26(5):1-7.
[9]杨扬,程信林.绝热剪切的研究现状及发展趋势[J].中国有色金属学报,2004,12(3):401-408.
[10]王礼立,胡时胜.钛合金TB-2在高应变率下的动态应力应变关系[J].爆炸与冲击,1985,5(1):9-15.
[11]陈志永,才鸿年,王富耻,等.热轧TB2钛合金织构多晶板动态压缩性能的各向异性[J].稀有金属材料与工程,2011,39(12):2101-2106.
[12]倪沛彤,韩明臣,朱梅生,等.热处理制度对TB2钛合金带材力学性能及显微组织的影响[J].钛工业进展,2013,29(6):19-21.
[13]卢轶,王俭,王红武.热处理工艺对TB2钛合金组织和性能的影响[J].稀有金属快报,2008,27(8):29-33.
[14]贺金宇,李德富,陈海珊,等.TB2合金锻造工艺与组织性能的研究[J].稀有金属材料与工程,2006,35(S2):152-155.
[15]GB/T 6394—2002.金属平均晶粒度测定方法[S].北京:中国标准出版社,2003.
[16]刘新芹,谭成文,张静,等.应力状态对Ti-6Al-4V绝热剪切敏感性的影响[J].稀有金属材料与工程,2008,37(9):1522-1525.
[17]张静.组织细节对Ti-6Al-4V合金力学性能及绝热剪切特性影响规律研究[D].北京:北京理工大学,2011.
[2]BOYER R R.Titanium for aerospace:Rationale and applications[J].Advanced Performance Materials,1995,2(4):349-368.
[3]BOYER R R,BRIGGS R D.The use ofβtitanium alloys in the aerospace industry[J].Journal of Materials Engineering&Performance,2005,14(6):681-685.
[4]FROES F H,SURYANARAYANA C,ELIEZER D.Synthesis,properties and applications of titanium aluminides[J].Journal of Materials Science,1992,27(19):5113-5140.
[5]JAMES C WILLIAMS,EDGAR A STARKE JR.Progress in structural materials for aerospace systems 1[J].Acta Materialia,2003,51(19):5775-5799.
[6]汪建林.高强度β钛合金的发展和应用[J].上海钢研,2001(2):25-33.
[7]杨冬雨,付艳艳,惠松骁,等.高强高韧钛合金研究与应用进展[J].稀有金属,2011,35(4):575-580.
[8]毛小南,赵永庆,杨冠军.国外航空发动机用钛合金的发展现状[J].稀有金属快报,2007,26(5):1-7.
[9]杨扬,程信林.绝热剪切的研究现状及发展趋势[J].中国有色金属学报,2004,12(3):401-408.
[10]王礼立,胡时胜.钛合金TB-2在高应变率下的动态应力应变关系[J].爆炸与冲击,1985,5(1):9-15.
[11]陈志永,才鸿年,王富耻,等.热轧TB2钛合金织构多晶板动态压缩性能的各向异性[J].稀有金属材料与工程,2011,39(12):2101-2106.
[12]倪沛彤,韩明臣,朱梅生,等.热处理制度对TB2钛合金带材力学性能及显微组织的影响[J].钛工业进展,2013,29(6):19-21.
[13]卢轶,王俭,王红武.热处理工艺对TB2钛合金组织和性能的影响[J].稀有金属快报,2008,27(8):29-33.
[14]贺金宇,李德富,陈海珊,等.TB2合金锻造工艺与组织性能的研究[J].稀有金属材料与工程,2006,35(S2):152-155.
[15]GB/T 6394—2002.金属平均晶粒度测定方法[S].北京:中国标准出版社,2003.
[16]刘新芹,谭成文,张静,等.应力状态对Ti-6Al-4V绝热剪切敏感性的影响[J].稀有金属材料与工程,2008,37(9):1522-1525.
[17]张静.组织细节对Ti-6Al-4V合金力学性能及绝热剪切特性影响规律研究[D].北京:北京理工大学,2011.