金属材料塑性功热转化的研究进展
Research Progress on the Plasticity-Induced Heating in Metallic Materials
岳鹏飞 1史荣豪 1龚朕 1张国赏 1杨少丹 2朱治愿 1宋克兴3
作者信息
- 1. 河南省科学院材料研究所河南省先进导体材料重点实验室,郑州 450046
- 2. 河南省科学院材料研究所河南省先进导体材料重点实验室,郑州 450046;郑州大学材料科学与工程学院,郑州 450001
- 3. 河南省科学院材料研究所河南省先进导体材料重点实验室,郑州 450046;河南科技大学材料科学与工程学院,河南 洛阳 471000
- 折叠
摘要
金属材料塑性功热转化是理解材料力学行为和热力学特性的关键问题之一.Taylor-Quinney系数(Taylor-Quinney Coefficient,TQC)作为量化塑性功热转化的核心参数,广泛应用于金属材料的塑性变形研究中.本文系统回顾了TQC的基本原理、实验研究、理论模型及计算模拟的最新进展.首先概述了TQC的定义及其热力学背景,讨论热能与冷功在塑性变形中的分配比例及其影响因素.总结了TQC的实验研究进展,包括高应变率、高温等条件下的热转化率测量及其影响因素.介绍了TQC相关的理论模型及其在不同加载条件下的应用,重点探讨位错力学、内变量模型等对TQC的描述.最后讨论了基于有限元模拟、分子动力学等计算模拟方法对TQC的深入研究,揭示微观结构对热转化效率的影响.金属材料塑性功热转化未来的研究主要聚焦多尺度模拟、极端条件下的TQC、微观结构调控等问题,以推动TQC在新材料开发、性能优化和高性能材料设计中的应用.
Abstract
The plasticity-induced heating in metallic materials is crucial for understanding their mechanical and thermodynamic behaviors.The Taylor-Quinney Coefficient(TQC)serves as a key parameter for quantifying the conversion of plastic work to heat during deformation.This review systematically examines the recent advances in TQC,focusing on its fundamental principles,experimental investigations,theoretical models,and computational simulations.First,the definition and thermodynamic background of TQC are outlined,along with its role in the distribution between heat and stored energy of cold work(SECW).Experimental studies on TQC,including the effects of high strain rates and temperature on heat conversion,are then summarized.Next,theoretical models of TQC are discussed,emphasizing the contributions of dislocation mechanics and internal state variable models in describing TQC under various loading conditions.Finally,computational approaches,such as finite element analysis and molecular dynamics simulations,are highlighted for their role in investigating the influence of microstructure on TQC.Future research will focus on TQC under multi-scale simulations,extreme conditions,and the micro-structural control of energy conversion,aiming to enhance the development of new materials and optimize high-performance material designs.
关键词
塑性功热转化/Taylor-Quinney系数(TQC)/应变率/位错演变/热力学特性Key words
plasticity-induced heating/Taylor-Quinney coefficient(TQC)/strain rates/dislocation evolution/thermodynamic properties引用本文复制引用
出版年
2025
NETL
NSTL
万方数据