钛合金微结构力学性能和氢扩散分析

张文娟; 杨帆; 陈超鹏

钛合金微结构力学性能和氢扩散分析

西安航空职业技术学院, 陕西西安 710089

基金项目:

海洋腐蚀与防护国防重点实验室开放基金(61429010102)

详细信息

作者简介:
张文娟,女,1991年生,硕士研究生,主要研究方向:机械结构完整性评价。

中图分类号: TG146.2
计量
- 文章访问数: 99
- HTML全文浏览量: 24
- PDF下载量: 29
- 被引次数: 0
出版历程
- 收稿日期: 2022-11-15
- 网络出版日期: 2023-07-10

Mechanical Properties and Hydrogen Diffusion Analysis of Titanium Alloy Microstructure

Xi'an Aeronautical Polytechnic Institute, Xi'an 710089, China

摘要

摘要: 为了获得钛合金微结构组织不均匀性对氢扩散以及力学性能的影响,建立多晶体微结构模型,运用Voronoi图剖分原理生成随机晶粒,分析加载载荷、晶粒取向、晶粒大小和材料属性对微结构力学性能和氢扩散的影响。结果表明:载荷对氢扩散有促进作用,对应力集中无影响;晶体取向是微结构应力分布不均的主要原因,晶粒尺寸越大应力集中越严重;相同载荷下,β钛合金比α钛合金的应力集中更明显,且氢容易在β钛合金中富集。
- 钛合金 /
- 微结构 /
- 应力集中 /
- 氢扩散
Abstract: In order to study the influence of microstructure heterogeneity of titanium alloy on hydrogen diffusion and mechanical properties, a polycrystalline microstructure model is established. The random grains are generated by the Voronoi diagram subdivision principle, and the influences of the microstructural mechanical properties and hydrogen diffusion on the loading load, grain orientation, grain size and material are analyzed. The results show that the load can promote the hydrogen diffusion and has no effect on the stress concentration. The crystal orientation is the main reason for the uneven stress distribution in the microstructure, and the larger the grain size, the more serious the stress concentration. Under the same load, the stress concentration in the β-titanium alloy is more obvious than that in the α-titanium alloy, and the hydrogen is more easily enriched in the β-titanium alloy.
- titanium alloy /
- microstructure /
- stress concentration /
- hydrogen diffusion

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参考文献(13)

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