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变形和微观结构进化的作用在TA15合金的质地形成上,该合金经过平面应变压缩
Xianxian Wang1,2, Xin Jia1, Wenhao Wu1
1School of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
Materials (Basel, Switzerland)
|August 10, 2024
概括
TA15合金的质地受到变形,温度和拉伸速率的影响,基本滑动占主导地位. 阶段转换和改变的滑动行为显著影响纹理演变和材料特性,如微硬度.
科学领域:
- 材料科学 材料科学 材料科学
- 金工业是金工业的一个方面.
- 晶体学 晶体学是指结晶学.
背景情况:
- 在机械负荷下,TA15合金表现出复杂的纹理形成.
- 了解纹理演变对于预测和优化材料特性至关重要.
研究的目的:
- 为了研究TA15合金在平面应变压缩下的纹理形成机制.
- 分析滑动,动态再结晶 (DRX) 和纹理开发中的相变的作用.
主要方法:
- 平面应变压缩实验在不同的变形量,温度和应变速率.
- 分析晶体结构,滑动系统,动态再结晶和相变的分析.
- 微硬度测试以将纹理与机械性能相关联.
主要成果:
- 由于主导的基底滑动,基底纹理普遍存在,C轴向正常方向 (ND) 旋转.
- 纹理强度和方向偏离ND随着变形,温度或拉伸率的增加,受滑动系统激活和相变化的影响.
- 较高的温度和较低的拉伸率促进了状α的形成,削弱了变形纹理.
- 持续动态再结晶 (CDRX) 发生,但对整体质感的影响最小.
- 微硬度与颗粒大小成反比例,并且随着状α形成而增加,较弱的纹理显示出更高的微硬度.
结论:
- 变形,温度和应变速率通过滑动,相位转换和DRX严格控制TA15合金质地.
- 状α形成显著改变了纹理,并增强了微硬度.
- 由于特定的变形条件导致的较弱纹理,可以导致由于激活的滑动系统而改善微硬度.
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