钼含量和均匀化处理冷却方式对β型Ti-Mo合金中点缺陷弛豫的影响
Influence of Mo Content and Cooling Method of Homogenization Treatment on Point Defect Relaxation in β-type Ti-Mo Alloys
周正存 1朱晓斌 2王幸福3
作者信息
- 1. 广东科技学院机电工程学院,东莞 523083
- 2. 苏州市职业大学机电工程学院,苏州 215104
- 3. 中国科学院合肥物质科学研究院,合肥 230031
- 折叠
摘要
采用真空电弧熔炼制备β型Ti-xMo(x为质量分数/％,3～24)合金,并进行950 ℃ × 20 min均匀化处理,随后分别水冷和炉冷至室温,通过内耗测试结合物相和微观结构分析,研究了钼含量和冷却方式对该合金点缺陷弛豫的影响.结果表明:炉冷和水冷Ti-xMo合金中均出现2个Snoek型驰豫峰,炉冷Ti-xMo合金的弛豫峰随钼含量的变化特征与水冷合金相似.2种冷却方式下Ti-xMo合金在加热时的低温峰峰高随钼含量的增加而增大,但峰温几乎不变,峰高的增大与β相和间隙氧原子含量的增多有关;除Ti-3Mo合金外,其余合金高温峰的峰高和峰温都随钼含量增加而增大,峰高和峰温的增大与钼和氧的相互作用增强有关.
Abstract
β type Ti-xMo(x was mass fraction/％,3-24)alloys were prepared by vacuum arc melting,and were treated by homogenization of 950 ℃ × 20 min and then were cooled to room temperature by water and furnace,respectively.The effect of Mo content and cooling method on point defect relaxation in the alloys was studied by internal friction test combined with phase and microstructure analysis.The results show that there were two Snoek-type relaxation peaks in the furnace-cooled and water-cooled Ti-xMo alloys.The relaxation peak changing characteristics with Mo content of furnace-cooled Ti-xMo alloys were similar to those of water-cooled alloys.The low-temperature peak height of Ti-xMo alloys under two cooling methods increased with the increase of Mo content during heating,but the peak temperature almost unchanged;the increase of peak height was attributed to the increase of β phase and interstitial oxygen atom content.Both the peak temperature and peak height of the high-temperature peak of water-cooled alloys increased with increasing Mo content,except for the water-cooled Ti-3Mo alloy;the increase in peak height and temperature was related to the enhancement of Mo and O interaction.
关键词
点缺陷弛豫/β型Ti-Mo合金/钼含量/间隙氧原子Key words
point defect relaxation/β-type Ti-Mo alloy/Mo content/interstitial oxygen atom引用本文复制引用
基金项目
江苏省高等学校基础科学研究面上项目(22KJB150038)
安徽省关键科学技术研究计划项目(2021001)
安徽省自然科学基金资助项目(2108085ME142)
苏州市职业大学科研平台资助项目(201804000050)
出版年
2024
NETL
NSTL
万方数据