钢铁钒钛2026，Vol.47Issue(1)：62-70,9.DOI:10.7513/j.issn.1004-7638.2026.01.007
TC4钛合金盘锻件显微组织和高温拉伸性能均匀性研究
Microstructural homogeneity and high-temperature tensile uniformity of TC4 alloy disk forgings
王影 1李楠 2彭文雅 1于帅 3刘建荣 2郭海龙 1王清江2
作者信息
- 1. 中国航发湖南动力机械研究所,湖南株洲 412002
- 2. 中国科学院金属研究所,辽宁沈阳 110016
- 3. 中国科学院金属研究所,辽宁沈阳 110016||中国科学技术大学材料科学与工程学院,辽宁沈阳 110016
- 折叠
摘要
Abstract
A TC4 titanium alloy disk was fabricated via die forging followed by solution and aging heat treatment.The microstructure and corresponding high temperature tensile properties were systematic-ally investigated across three representative regions.The results reveal significant radial non-uniformity in high temperature tensile properties,the rim region exhibits the highest strength,the 1/2R region ap-pears the lowest,while ductility shows little difference among the three regions.Microstructure,texture and fracture surface analyses indicate that the non-uniformity in high temperature tensile properties ori-ginates from variations in the morphology and texture of α phase.The rim and hub regions contain fine secondary α phase with basket-weave morphology,which effectively suppresses dislocation motion and void coalescence,thereby enhancing strength without compromising ductility.In contrast,the 1/2R re-gion contains coarser secondary α phase with a colony-like morphology,promoting localized void growth and early fracture.In addition,due to the high Schmidt factor of the basal slip of the α phase in the 1/2R region,the tensile strength is reduced.关键词
TC4钛合金/盘锻件/显微组织/高温拉伸性能Key words
TC4 titanium alloy/disk forging/microstructure/high temperature tensile properties分类
矿业与冶金引用本文复制引用
王影,李楠,彭文雅,于帅,刘建荣,郭海龙,王清江..TC4钛合金盘锻件显微组织和高温拉伸性能均匀性研究[J].钢铁钒钛,2026,47(1):62-70,9.
