工程科学学报2017，Vol.39Issue(12)：1844-1850,7.DOI:10.13374/j.issn2095-9389.2017.12.010
循环热处理及形变对TC17钛合金片层组织球化和取向的影响
Effect of cyclic heat treatment with hot deformation on the microstructure and structural orientation of TC17 titanium alloy lamellae
陈少华 1张麦仓 1贾萌柳 1彭桃2
作者信息
- 1. 北京科技大学材料科学与工程学院, 北京100083
- 2. 有色金属研究总院,北京100088
- 折叠
摘要
Abstract
The effects of cyclic heat treatment and hot deformation on the spheroidization and orientation of the TC17 titanium al-loy were investigated using a light microscope ( LM) and electron backscattered diffraction ( EBSD) . The experimental results indicate that in the two-phase temperature range of a simple, cycle heat treatment, the spheroidization of the lamellar microstructure of the TC17 titanium alloy is finite. After cyclic heat treatment and compression deformation, the Widmannstatten structure disappears, the spheroidized α lamellae is more obvious, but the uniformity of its orientation is not greatly improved. In addition, the recrystallization velocity, and the strength and toughness of the two phases in deformation lead to a difference in their orientation, and the recrystalliza-tion velocity of theαphase is faster than that of theβphase. In the deformation process, the anisotropy of theαphase is preferentially reduced. On the other hand, during the hot deformation process, the degree of deformation of theαphase is lower than that of theβphase, because theαphase is harder than theβphase. The strain is primarily concentrated on the softerβphase adjacent toαphase, which produces greater uniformity in α phase than in the β phase.关键词
TC17合金/形变热处理/片层组织/球化/取向Key words
TC17 alloy/thermal mechanical treatment/lamellar structure/spheroidization/orientation分类
矿业与冶金引用本文复制引用
陈少华,张麦仓,贾萌柳,彭桃..循环热处理及形变对TC17钛合金片层组织球化和取向的影响[J].工程科学学报,2017,39(12):1844-1850,7.
