微结构对Ti-1300合金高速拉伸力机械性能的影响
Zhu-Ye Zhang1,2, Dong-Rong Liu1,2, Zhen-Peng Pu1,2
1School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, No. 4 Lin Yuan Road, Harbin 150040, China.
Materials (Basel, Switzerland)
|July 14, 2023
概括
对Ti-1300合金进行的高速拉伸试验显示,延展率的增加提高了强度和性. 主要的变形机制仍然是脱位滑动,导致柔性骨折,这对于极端负载下的航空航天应用至关重要.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 金工业是金工业的一个方面.
背景情况:
- 由于其强度和性,Ti-1300合金在航空航天领域至关重要.
- 组件在服务过程中经常面临极端的负载,需要了解压力下的材料行为.
研究的目的:
- 研究高拉伸率对Ti-1300合金微观结构和变形的影响.
- 在动态负载下建立微观结构和机械性能之间的相关性.
主要方法:
- 使用高速拉伸技术来测试Ti-1300合金.
- 系统地研究了200s-1和500s-1的应变速率.
主要成果:
- 在测试的菌株速率下没有观察到相变.
- 脱位滑动被确定为主要的变形机制.
- 柔性骨折是由于微空隙凝聚而发生的,由脱位滑动促进.
结论:
- 在高延展率下,Ti-1300合金表现出增强的最终抗拉强度 (1227-1368MPa) 和屈服强度 (1050-1220MPa).
- 这项研究为在高应变率环境中使用超稳定β合金提供了理论指导.
相关概念视频
01:18Mechanical Characteristics of Steel
607
The mechanical characteristics of steel are assessed through various tests that evaluate its strength, toughness, and flexibility. These tests include tension, torsion, impact, bending, and hardness assessments, each providing crucial information about steel's suitability for specific applications.
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
607
01:16Tensile Strength Considerations of Concrete
155
Considering the tensile strength of concrete involves recognizing that the theoretical strength of cement paste can be up to a thousand times higher than what is observed in practical applications. This significant discrepancy is largely attributed to the presence of microscopic cracks within the concrete. These cracks tend to amplify stress at their tips when a load is applied, a phenomenon explained by Griffith's theory of brittle fracture.
The dimensions and shape of a concrete specimen...
The dimensions and shape of a concrete specimen...
155