过渡金属合金元素对Ti-44Al-8Nb-0.2B-0.2Y合金变形的影响

Effect of transition metal alloying elements on the deformation of Ti-44Al-8Nb-0.2B-0.2Y alloys.

作者信息

Zhang Laiqi, Ge Gengwu, Lin Junpin, Aindow Mark, Zhang Lichun

机构信息

State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China.

Department of Materials Science and Engineering, Institute of Materials Science, University of Connecticut, Storrs, CT, 06269-3136, USA.

出版信息

Sci Rep. 2018 Sep 24;8(1):14242. doi: 10.1038/s41598-018-32570-4.

DOI:10.1038/s41598-018-32570-4

PMID:30250147

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6155326/

Abstract

A series of β-γ Ti-44Al-8Nb-0.2B-0.2Y alloys have been modified with 0.5 to 2.0 at.% of the β-stabilizing elements Mn, Cr, Mo and V. Additions of Cr and Mo alone result in a decrease in the flow stress, whereas the opposite effect was observed for additions of V. For alloys with Mn additions, a minimum value of the flow stress was achieved in the alloy with 1.5% Mn. For alloys with combined additions, optimum hot deformation behavior was obtained for the alloy with 1.5% Mn and 1.0% Cr.

摘要

一系列β-γ Ti-44Al-8Nb-0.2B-0.2Y合金已用0.5至2.0原子百分比的β稳定元素Mn、Cr、Mo和V进行了改性。单独添加Cr和Mo会导致流变应力降低，而添加V则观察到相反的效果。对于添加Mn的合金，在含1.5% Mn的合金中实现了流变应力的最小值。对于复合添加的合金，含1.5% Mn和1.0% Cr的合金获得了最佳的热变形行为。