Evolution of microstructure and high temperature tensile properties of as-extruded TiBw reinforced near-α titanium matrix composite subjected to heat treatments
Evolution of microstructure and high temperature tensile properties of as-extruded TiBw reinforced near-α titanium matrix composite subjected to heat treatments
复制标题
热处理后挤压 TiBw 增强近α钛基复合材料显微组织和高温拉伸性能的演变
DOI：
10.1007/s11431-018-9323-3
复制
发表时间：
2018-08
期刊：
影响因子：
--
通讯作者：
Wang Wei
中科院分区：
文献类型：
--
作者：
Wang Bo;Zhang Haobiao;Huang Lujun;He Jianli;Zhang Youfeng;Wang Wei
采用粉末冶金和热挤压工艺制备了TiBw增强近α钛基复合材料（Ti-5.8Al-3.4Zr-4.0Sn-0.4Mo-0.4Nb-0.4Si-0.06C）。研究了固溶和时效温度对复合材料组织和高温拉伸性能的影响。结果表明，在β相区进行固溶处理和时效处理，可获得细小的β相转变，无其它析出物。在α+β相区进行固溶处理后再进行时效处理，可获得α2相（Ti_3Al）。随着时效温度从500 ℃升高到700℃，时效时间从5 h增加到700℃，α 2相的尺寸从5 nm左右增加到30 nm左右。TiBw在热处理过程中是稳定的，没有任何界面反应。高温拉伸性能表明，固溶时效处理后的复合材料具有良好的强化效果。随着时效温度从500 ℃提高到700℃，由于α 2析出相的增加，复合材料的强度增加，但延伸率下降。经1000℃/2 h/AC和700℃/5 h/AC热处理后，复合材料的600℃强度提高了17%，达到986 MPa。
The TiBw reinforced near-α titanium matrix composite(Ti-5.8Al-3.4Zr-4.0Sn-0.4Mo-0.4Nb-0.4Si-0.06C) was successfully synthesized by powder metallurgy and hot extrusion route. The effects of solution and aging temperature on the microstructure and high temperature tensile properties of the composite were investigated. The results revealed that the fine transformed β phase can be obtained by the solution treatment at β phase region and aging treatment, no other precipitates were observed. The α2 phase(Ti_3Al) can be acquired when the solution treated at α+β phase region followed by aging treatment. With increasing the aging temperature from 500 to 700℃ for 5 h, the size of α_2 precipitates increases from about 5 to about 30 nm. The TiBw are stable without any interfacial reaction during the heat treatments. The high temperature tensile properties show that the composite performed by solution and aging treatment exhibits good strengthening effects. With increasing the aging temperature from 500 to 700℃, the strength of the composite increases at the expense of elongation due to the increment of α_2 precipitates. The strength of the composite at 600℃ increases by 17% to 986 MPa after 1000℃/2 h/AC and 700℃/5 h/AC heat treatment.
登录
查看更多内容
DOI：
10.1016/j.msea.2011.03.018
发表时间：
2011-06-15
影响因子：
6.4
作者：
Li, Jiuxiao;Wang, Liqiang;Zhang, Di
通讯作者：
Zhang, Di
影响因子：
6.2
作者：
Gao, Xiongxiong;Zeng, Weidong;Wang, Qingjiang
通讯作者：
Wang, Qingjiang
影响因子：
6.2
作者：
R. Gaisin;V. Imayev;R. Imayev
通讯作者：
R. Gaisin;V. Imayev;R. Imayev
DOI：
10.1016/j.msea.2018.01.113
发表时间：
2018-03-07
影响因子：
6.4
作者：
Narayana, P. L.;Kim, Seong-Woong;Yeom, Jong-Taek
通讯作者：
Yeom, Jong-Taek
钛基复合材料中石墨烯纳米片的增强
影响因子：
6.2
作者：
Cao, Zhen;Wang, Xudong;Wang, Shengqiang
通讯作者：
Wang, Shengqiang