Tailoring Microstructures of Metals

doi:10.11900/0412.1961.2022.00555

IMR OpenIR

	Tailoring Microstructures of Metals
	Li Dianzhong; Wang Pei
通讯作者	Li Dianzhong(dzli@imr.ac.cn)
	2023-04-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	59 期号:4 页码:447-456
摘要	In the light of the property requirements to design microstructures will become an important develop direction of metal materials. Here, a new concept of microstructure tailoring is proposed. The main features of microstructure tailoring include designing mesoscale microstructure, establishing quantitative relation between microstructures and properties, accurately inverse-designing and fabricating microstructures to satisfy the property requirements. It means screening, multi-scale calculation, and quantification of the essential microstructural factors should be performed first. Second, the microstructures are purposefully fabricated after adjusting the thermodynamics and kinetics of phase transformation. Third, the microstructures are assessed and tailored through iterative optimization. Microstructure tailoring must be preceded by purification and homogenization of metals. Only when the purity problem of materials is solved first, the influence of inclusions and impurity elements can be eliminated. Only by eliminating the macro-segregation can the material achieve homogeneity. And then the intrinsic properties of the material be fully reflected. As an example of microstructure tailoring, this study investigates the expected fatiguelife requirements of M50 (G80Cr4Mo4V) steels used for bearings in aircraft engines. By controlling the macro-segregation and purification, it is found that the fatigue-life of M50 steel mainly depends on primary carbides. And then the size, type, and morphology of the primary carbides are quantitatively tailored to fulfill the fatigue-life requirement. With technological developments in the metallurgy industry, microstructure tailoring will become a mainstay of the development of metals. And, applying data science and modeling along with microstructure tailoring technology, the alloy design will be gradually optimized in the future. The expensive metal addition will be reduced gradually, so as to save resources and develop green materials.
关键词	metal tailoring microstructure microstructure service performance evaluation
资助者	National Natural Science Foundation of China
DOI	10.11900/0412.1961.2022.00555
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52031013]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000980757300002
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177792
专题	中国科学院金属研究所
通讯作者	Li Dianzhong
作者单位	Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li Dianzhong,Wang Pei. Tailoring Microstructures of Metals[J]. ACTA METALLURGICA SINICA,2023,59(4):447-456.
APA	Li Dianzhong,&Wang Pei.(2023).Tailoring Microstructures of Metals.ACTA METALLURGICA SINICA,59(4),447-456.
MLA	Li Dianzhong,et al."Tailoring Microstructures of Metals".ACTA METALLURGICA SINICA 59.4(2023):447-456.