摘要
通过热模拟实验研究了含氢量及工艺参数对Ti600合金的激活能及高温性能的影响。结果表明,当w(H)>0.2%且逐渐增加时,由于此时氢元素的固溶强化作用大于其对β相的稳定作用,流变应力回升。在分析变形温度、变形程度、和应变速率对流动应力的影响的基础上,依据Arrhenius方程对实验数据进行回归,得到了Ti600合金在w(H)=0.2%时的激活能,为钛合金置氢工艺的进一步研究提供了理论依据。
The active energy and high-temperature mechanical properties of titanium alloy Ti600 with different hydrogen content and technology parameters were studied with thermal simulation experiment. The results show that the flow stress of Ti600 alloy with 0.2wt%H is relatively smaller than that with other conditions. Subsequently, the flow stress starts to rise again with the increase of hydrogen content. Because the solid solution strengthening of hydrogen was more effective than the stabilization effect to β phase at that moment. Through analyzing the effects of deforming temperature, deformation degree and strain rate on flow stress, the active energy of titanium alloy Ti600 containing H between 0.2% and 0.3% was calculated by the equation provided by Arrhenius. Consequently, these datas can also lay a theoretical foundation for the further study on hydrogen technology of titanium.
出处
《热加工工艺》
CSCD
北大核心
2009年第4期20-23,共4页
Hot Working Technology
关键词
TI600合金
置氢量
工艺参数
激活能
Ti600 alloy
hydrogen content
technology parameters
active energy
