航空材料学报Issue(3)：35-42,8.DOI:10.11868/j.issn.1005-5053.2015.3.007
Cr 含量对 Ti5Mo5V3Al-xCr 系合金组织及性能的影响
Effects of Cr Content on Microstructure and Mechanical Properties of Ti5Mo5V3Al-xCr Alloys
摘要
Abstract
Different Cr contents of Ti5Mo5V3Al-xCr (x = 1 .0,3.0,5.0,7.0,9.0)alloys were solution treated in βphase region (above the phase transition point 20℃)and α+βphase region (below the phase transition point 30℃).And then aging at the same temperature of 520℃.The mechanical properties results show that the aging strengthening capacity of alloys decreased with increasing Cr content.Scanning electron microscopic and X-ray diffraction were used to analyze the correlation between the micro factors (such as phase composition,phase content,phase size and phase morphology)and the macro mechanical properties in different heat treatment conditions.The results show that the aging strengthening mechanism of Ti5Mo5V3Al-xCr alloys is mainly caused by the precipitation ofαs phase in the process of aging.The aging strengthening capacity of alloys is closely related to the number of αs phase and the size ofαs phase.The precipitation mechanism of αs phase is mainly dominated by the content of Cr element in Ti5Mo5V3Al-xCr alloys.关键词
Ti5Mo5V3Al-xCr 合金/Cr 含量/αs 相/时效强化Key words
Ti5Mo5V3Al-xCr alloys/Cr content/αs phase/aging strengthening分类
矿业与冶金引用本文复制引用
崔雪飞,米绪军,惠松骁,魏衍广,罗峥,陶海明..Cr 含量对 Ti5Mo5V3Al-xCr 系合金组织及性能的影响[J].航空材料学报,2015,(3):35-42,8.基金项目
国家国际科技合作专项项目 （）
