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摘要：
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利用THERMECMASTOR-Z型热模拟试验机,在温度为960和1050℃。应变速率为0.001～70 s~(-1)范围内对TC11钛合金进行了真应变为1.2的等温恒应变速率压缩实验,得到了高温塑性流动的真应力—真应变关系曲线特征。采用金相显微镜对其变形前后的微观组织进行了观察。结果表明,在960℃,较佳的应变速率为0.001 s~(-1),变形机制为超塑性;在1050℃,较佳的应变速率在0.1 s~(-1)附近,变形机制为动态再结晶。
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Isothermal constant strain rate compression tests on TCll alloy in the strain rate range of 0.001～70.0 s~(-1) were conducted up to a true strain of 1.2 using the THERMECMASTOR-Z hot working simulator,at 960 and 1050℃,respectively.The characteristic of true stress-true stain curves of high temperature plastic flow was ob- tained,and the microstructures of the pressed samples and those before pressing were investigated with metallographic microscope.The results indicate that the strain rates of 0.001 and 0.1 s~(-1) are preferable for hot working at 960 and 1050℃,respectively.Corresponding deformation mechanisms are superplasticity and dynamic recrystallization for the former and the later,respectively.
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基金项目：
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江西省自然科学基金(2007GQC1575);;
江西省材料科学与工程研究中心预研基金(ZX200601002)
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作者简介：
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参考文献：
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