TC17钛合金热变形行为及其修正J-C本构模型
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摘要
采用Gleeble 3500D热模拟试验机对TC17钛合金进行了高温压缩试验(变形温度700～950℃,应变速率0.001～10 s~(-1),真应变0.9)。结果表明:TC17钛合金的高温流变应力对应变速率和变形温度非常敏感。在高温高应变速率条件下,TC17钛合金的流变应力出现了明显的应力不连续屈服现象。建立了TC17钛合金的修正J-C本构方程,并引入相关系数R和平均相对误差AARE对方程的准确性进行了分析,与试验结果对比表明:该方程可以较准确地描述TC17钛合金的高温流动行为。
Isothermal compression tests on a Gleeble 3500 D simulator were carried out for the purpose of investigating the hot deformation behavior of TC17 titanium alloy.The test temperature range,the strain rate and true strain were 700-950 ℃,0.001-10 s~(-1) and 0.9,respectively.The results indicate that the flow stress is sensitive with deformation temperature and strain rate.Meanwhile,discontinuous yielding phenomenon is found at deformation conditions of the high strain rate at high temperature.Then,the experimental stress-strain data were employed to develop the modified J-Cook constitutive equation.The predicted flow stresses using the developed equations were compared with experimental data.Correlation coefficient( R) and average absolute relative error( AARE) were introduced to verify the validity of the modified J-Cook constitutive equation.The results indicate that the developed modified J-C constitutive equations can predict flow stress of TC17 titanium alloy with good correlation and generalization.
Isothermal compression tests on a Gleeble 3500 D simulator were carried out for the purpose of investigating the hot deformation behavior of TC17 titanium alloy.The test temperature range,the strain rate and true strain were 700-950 ℃,0.001-10 s~(-1) and 0.9,respectively.The results indicate that the flow stress is sensitive with deformation temperature and strain rate.Meanwhile,discontinuous yielding phenomenon is found at deformation conditions of the high strain rate at high temperature.Then,the experimental stress-strain data were employed to develop the modified J-Cook constitutive equation.The predicted flow stresses using the developed equations were compared with experimental data.Correlation coefficient( R) and average absolute relative error( AARE) were introduced to verify the validity of the modified J-Cook constitutive equation.The results indicate that the developed modified J-C constitutive equations can predict flow stress of TC17 titanium alloy with good correlation and generalization.
引文
[1]何杉,杨清,闵祥禄.喷丸强化对TC17钛合金疲劳性能的影响[J].金属热处理,2018,43(6):159-161.He Shan,Yang Qing,Min Xianglu. Influence of shot peening on fatigue property of TC17 titanium alloy[J]. Heat Treatment of Metals,2018,43(6):159-161.
[2]贾志强,曾卫东,王凯旋. TC17钛合金热变形过程中片状组织球化演变及Burgers关系的破坏[J].稀有金属材料与工程,2017,46(10):2895-2899.Jia Zhiqiang, Zeng Weidong, Wang Kaixuan. Globularization evolution of lamellar microstructure and destruction of burgers orientation relationship for TC17 titanium alloy during hot deformation[J]. Rare Metal Materials and Engineering,2017,46(10):2895-2899.
[3]Sun Lixing,Li Miaoquan,Li Huiming. Prediction model for surface layer microhardness of processed TC17 via high energy shot peening[J]. Transactions of Nonferrous Metals Society of China(English Edition),2017,27(9):1956-1963.
[4]袁士翀,王周田,高志刚,等.β锻造参数对TC17钛合金组织性能的影响[J].锻压技术,2018,43(2):14-19Yuan Shichong,Wang Zhoutian,Gao Zhigang et al. Influence ofβforging parameters on microstructure and properties of titanium alloy TC17[J]. Forging and Stamping Technology,2018,43(2):14-19.
[5]王琪,郑百林,张锴,等.考虑高温再结晶Ti-6Al-4V合金的修正J-C本构模型.[J].金属热处理,2016,41(8):179-183.Wang Qi,Zheng Bailin,Zhang Kai,et al. Modified Johnson-Cook constitutive equation of Ti-6Al-4V alloy considering high temperature recrystallization[J]. Heat Treatment of Metals, 2016, 41(8):179-183.
[6]王宝,杨艳,彭晓东,等.挤压态Mg-9Li-3Al-1. 6Y合金的热变形行为[J].兵器材料科学与工程,2017,40(4):64-69.Wang Bao,Yang Yan,Peng Xiaodong,et al. Deformation behavior of extruded Mg-9Li-3Al-1. 6Y alloy at elevated temperature[J]. Ordnance Material Science and Engineering,2017,40(4):64-69.
[7] Ki B P,Young T C,Yoon G J. Determination of Johnson-Cook constitutive equation for Inconel 601[J]. Journal of Mechanical Science and Technolog,2018,32(4):1569-1574.
[8]Panicker S S,Prasad K S,Basak S,et al. Constitutive behavior and deep drawability of three aluminum alloys under different temperatures and deformation speeds[J]. Journal of Materials Engineering and Performance,2017,26(8):3954-3969.
[9]Kim W J,Kwak T Y. Constitutive modeling and understanding of the hot compressive deformation of Mg-9. 5Zn-2. 0Y magnesium alloy with reduced number of strain-dependent constitutive parameters[J]. Metals and Materials International,2017,23(4):660-672.
[10]Lin Y C,Chen Xiaomin,Liu Ge. A modified Johnson-Cook model for tensile behaviors of typical high-strength alloy steel[J]. Materials Science and Engineering A,2010,527(26):6980-6986.
[2]贾志强,曾卫东,王凯旋. TC17钛合金热变形过程中片状组织球化演变及Burgers关系的破坏[J].稀有金属材料与工程,2017,46(10):2895-2899.Jia Zhiqiang, Zeng Weidong, Wang Kaixuan. Globularization evolution of lamellar microstructure and destruction of burgers orientation relationship for TC17 titanium alloy during hot deformation[J]. Rare Metal Materials and Engineering,2017,46(10):2895-2899.
[3]Sun Lixing,Li Miaoquan,Li Huiming. Prediction model for surface layer microhardness of processed TC17 via high energy shot peening[J]. Transactions of Nonferrous Metals Society of China(English Edition),2017,27(9):1956-1963.
[4]袁士翀,王周田,高志刚,等.β锻造参数对TC17钛合金组织性能的影响[J].锻压技术,2018,43(2):14-19Yuan Shichong,Wang Zhoutian,Gao Zhigang et al. Influence ofβforging parameters on microstructure and properties of titanium alloy TC17[J]. Forging and Stamping Technology,2018,43(2):14-19.
[5]王琪,郑百林,张锴,等.考虑高温再结晶Ti-6Al-4V合金的修正J-C本构模型.[J].金属热处理,2016,41(8):179-183.Wang Qi,Zheng Bailin,Zhang Kai,et al. Modified Johnson-Cook constitutive equation of Ti-6Al-4V alloy considering high temperature recrystallization[J]. Heat Treatment of Metals, 2016, 41(8):179-183.
[6]王宝,杨艳,彭晓东,等.挤压态Mg-9Li-3Al-1. 6Y合金的热变形行为[J].兵器材料科学与工程,2017,40(4):64-69.Wang Bao,Yang Yan,Peng Xiaodong,et al. Deformation behavior of extruded Mg-9Li-3Al-1. 6Y alloy at elevated temperature[J]. Ordnance Material Science and Engineering,2017,40(4):64-69.
[7] Ki B P,Young T C,Yoon G J. Determination of Johnson-Cook constitutive equation for Inconel 601[J]. Journal of Mechanical Science and Technolog,2018,32(4):1569-1574.
[8]Panicker S S,Prasad K S,Basak S,et al. Constitutive behavior and deep drawability of three aluminum alloys under different temperatures and deformation speeds[J]. Journal of Materials Engineering and Performance,2017,26(8):3954-3969.
[9]Kim W J,Kwak T Y. Constitutive modeling and understanding of the hot compressive deformation of Mg-9. 5Zn-2. 0Y magnesium alloy with reduced number of strain-dependent constitutive parameters[J]. Metals and Materials International,2017,23(4):660-672.
[10]Lin Y C,Chen Xiaomin,Liu Ge. A modified Johnson-Cook model for tensile behaviors of typical high-strength alloy steel[J]. Materials Science and Engineering A,2010,527(26):6980-6986.