|
摘要：
|
|
在Thermecmaster-Z型热模拟试验机上,对粗片状魏氏组织TC11钛合金在850~1000℃,0.001~10 s-1范围内进行等温恒应变速率压缩试验。分析了流动应力随热力参数的变化规律,并对Arrhenius型方程的适用性进行了分析,在综合考虑应变速率、变形温度和应变量对流动应力影响的基础上,构建出适合粗片状魏氏组织TC11钛合金的本构关系。误差分析表明,该本构关系有较好的精度。
|
|
The isothermal constant strain rate compression tests for TC11 titanium alloy with thick laths widmanstatten microstructures were carried out in the temperature range of 850-1000 ℃ and strain rate range of 0.001-10 s-1 by using the Thermecmaster-Z hot working simulator.The change of flow stress with thermomechanical parameters was revealed from true stress-true strain curves and the applicability of Arrhenius equations for TC11 titanium alloy was analyzed.On the base of effects of strain rate,temperature and strain on flow stress,constitutive relationship for TC11 titanium alloy with thick laths widmanstatten microstructures was constructed.Error analysis shows that the experimental data are in good agreement with the theoretical curves.
|
|
基金项目：
|
|
江西省材料科学与工程中心基金资助项目(ZX200601002)
|
|
作者简介：
|
|
|
|
参考文献：
|
[1]郭鸿镇.TC11钛合金叶片组织和性能控制[J].航空学报,1997,18(2):189-195.
[2]William D,Brewer,Keith R.Titanium alloys and processingfor high speed aircraft[J].Materials Science and EngineeringA,1998,(243):299-304.
[3]Shang Shunli,Shen Jianyun,Wang Xizhe.Transformationtextures in anα+βtitanium alloy thin laths[J].MaterialsScience and Engineering,2002,(A326):259.
[4]闫世成,刘东,杨艳慧,等.等温锻造过程中Ti-1023合金的本构关系[J].热加工工艺,2005,34(6):1-3.
[5]罗子健,杨旗,姬婉华.考虑变形热效应的本构关系建立方法[J].中国有色金属学报,2000,10(6):804-808.
[6]McQeen H J,Belling J.Constitutive constants for hot work-ing of Al-4.5Mg-0.35Mn[J].Canadian Metallurgical Quar-terly,2000,39(4):483-492.
[7]Kreuss C.Defermation Processing and Structure[M].Ohio:American Sosiety for Metal,1984.
[8]Rao K P,Hawbolt E B.Development of constitutive relationshipusing compression testing of a medium carborn steel[J].Engi-neering Materials and Technology,1992(114):116-123.
[9]Imbert C,Ryan N D,McQeen H J.Hot workability of threegrade of tool steel[J].Metall Trans A,1984,15(10):1855-1864.
[10]Milovic C,Manojlovic D,Andjelic M,et al.Hot workabilityof M2 type high-speed steel[J].Steel Tesearch,1992,63(2):78-84.
|
|
服务与反馈：
|
|
【本网站尚未开通全文下载服务】【加入收藏】
|
|
|
|
