在金属材料中的亚亚巴特切割定位:审查
Xinran Guan1, Shoujiang Qu1, Hao Wang2
1Shanghai Key Laboratory of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, China.
Materials (Basel, Switzerland)
|November 9, 2024
概括
在高应变率工程中至关重要的adiabatic剪切不稳定性,涉及热和微结构软化. 了解这些机制是控制材料故障或在高速加工等应用中利用其关键.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 固体力学 固体力学是什么
背景情况:
- 高应变率的应用需要先进的材料性能.
- 在这些条件下,亚亚巴学剪切不稳定性 (ASB) 是一个关键的现象,其特点是大剪切应变,高应变率和高温.
- ASB的形成可能导致灾难性的材料故障,但可以在特定的应用中加以利用,如高速加工和弹子穿透.
研究的目的:
- 综述阿迪亚巴斯切尔带 (ASB) 形成背后的基本理论,重点关注热和微观结构软化效应.
- 为了阐明复杂的变形机制和温度变化在热力学合下的剪切不稳定性.
- 确定关键挑战,并总结研究ASB的实验和计算方法的进展.
主要方法:
- 对现有关于热和微结构软化理论的审查.
- 对有关ASB形成的实验结果的分析.
- 总结实验性表征技术的进展.
- 对模拟ASB的计算建模方法的概述.
主要成果:
- 热软化和微结构软化被确定为ASB形成的基础理论.
- 突出了复杂的变形机制和剪切不稳定性期间的温度演变.
- 确定了理解ASB的关键研究挑战.
结论:
- 通过实验和计算技术的进步,可以更深入地了解ASB.
- 阐明热力学合和温度效应对于在高应变率条件下管理材料行为至关重要.
- 需要进一步的研究,以解决在剪切不稳定性领域所面临的挑战.
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