[1]张玉兵,王慷,彭浩然,等.金属材料非平衡相变的热/动力学协同[J].中国材料进展,2019,(03):251-263.[doi:10.7502/j.issn.1674-3962.2019.03.07]
 ZHANG Yubing,WANG Kang,PENG Haoran,et al.Correlation between Thermodynamics and Kinetics in Non-Equilibrium Phase Transformation of Metallic Material[J].MATERIALS CHINA,2019,(03):251-263.[doi:10.7502/j.issn.1674-3962.2019.03.07]
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金属材料非平衡相变的热/动力学协同()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2019年第03期
页码:
251-263
栏目:
前沿综述
出版日期:
2019-03-31

文章信息/Info

Title:
Correlation between Thermodynamics and Kinetics in Non-Equilibrium Phase Transformation of Metallic Material
作者:
张玉兵王慷彭浩然张旭陈豫增刘峰
(西北工业大学 凝固技术国家重点实验室,陕西 西安 710072)
Author(s):
ZHANG YubingWANG KangPENG HaoranZHANG XuCHEN YuzengLIU Feng
(State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China)
关键词:
热力学动力学金属材料相变相关性
Keywords:
thermodynamicskineticsmetallic materialsphase transformationcorrelation
DOI:
10.7502/j.issn.1674-3962.2019.03.07
文献标志码:
A
摘要:
金属热加工通过相变决定材料最终组织和性能。随非平衡技术快速发展,热加工工艺趋于极端化和多样化,控制相变的热力学与动力学机制从简单近平衡条件下的相对独立转变为复杂远平衡条件下的高度关联。基于热/动力学独立处理的传统理论已无法应对上述相变涉及的机理描述、组织预测和过程控制。这已然成为高端制造业迫切需要解决的关键问题,也给金属材料非平衡相变研究带来了挑战和机遇。针对纯Fe沿Bain路径的马氏体切变、低合金钢组织调控中的马氏体相变、晶界迁移及晶粒长大热稳定性,整理出热力学驱动力和动力学能垒的定量关联,进而演绎并提出热/动力学相关性。旨在探讨相变热力学和动力学间的固有规律,以指导典型工业用合金的微观组织设计。
Abstract:
The final microstructure and property of metallic materials are determined by hot-working, in terms of phase transformations. With rapid development of the non-equilibrium technology, the processing of hot-working is becoming extreme and versatile, so that the thermodynamics and kinetics controlling the phase transformation is changed from the inter-independence corresponding to brief near-equilibrium process to the highly correlation corresponding to complicated extremely non-equilibrium process. Accordingly, the classical theory, basing on the independent treatment of thermodynamics and kinetics, has become unsuitable to describe the mechanism, predict the microstructure and control the process. This key problem needs to be solved urgently for high-end manufacturing industry, while brings challenges and opportunities for investigations of non-equilibrium phase transformation. The present review is focused on martensitic transition in Fe via Bain path, microstructure regulation by martensitic transformation in low-alloyed steels, and GB migration and the thermal stability of grain growth, quantitatively summarizing the correlation between thermodynamics and kinetics. On this basis, it is aimed to discuss the intrinsic law between thermodynamics and kinetics of phase transition, and thus guide the microstructure design for typical industrial alloys.

备注/Memo

备注/Memo:
基金项目:国家重点研发计划项目 (2017YFB0305100,2017YFB0703001);国家自然科学基金项目(51431008,51790481);中央高校基本科研业务费项目(3102017jc01002);西北工业大学凝固技术国家重点实验室自主研究课题项目 (117-TZ-2015)
第一作者: 张玉兵,女,1996年生,硕士研究生
通讯作者: 刘 峰,男,1974年生,教授,博士生导师,Email: liufeng@nwpu.edu.cn
更新日期/Last Update: 2019-02-28