热处理对TC4-DT钛合金拉伸变形后组织的影响
发布时间：2018-07-22 19:11
【摘要】：研究了双重退火热处理对经不同的拉伸条件变形后的TC4-DT钛合金组织的影响。结果表明:双重退火后得到的组织与拉伸变形条件和第一重退火温度有关。当经最佳的应变速率5.6×10-4s-1和变形温度920~980℃变形后,随第一次退火温度升高,显微组织中次生α相析出量增加;在980℃变形后,经过双重退火后的合金组织可以得到编织紧密的网篮组织,且第一重退火温度在β单相区时得到的网篮组织的针状α相更加细长。当经最佳的变形温度940℃和不同的应变速率5.6×10-2~5.6×10-4s-1变形后,经过930℃/1 h AC+540℃/4 h AC双重退火的组织可以得到双态组织,而经过980℃/1 h AC+540℃/4 h AC双重退火的组织为魏氏组织。
[Abstract]:The effect of double annealing heat treatment on the microstructure of TC4-DT titanium alloy deformed under different tensile conditions was studied. The results show that the microstructure obtained after double annealing is related to the tensile deformation condition and the first annealing temperature. When the optimum strain rate is 5. 6 脳 10-4s-1 and the deformation temperature is 920 ~ 980 鈩，
本文编号：2138290
[Abstract]:The effect of double annealing heat treatment on the microstructure of TC4-DT titanium alloy deformed under different tensile conditions was studied. The results show that the microstructure obtained after double annealing is related to the tensile deformation condition and the first annealing temperature. When the optimum strain rate is 5. 6 脳 10-4s-1 and the deformation temperature is 920 ~ 980 鈩，
本文编号：2138290
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