Void Nucleation and Growth from Heterophases and the Exploitation of New Toughening Mechanisms in Metals

doi:10.3390/cryst13060860

IMR OpenIR

	Void Nucleation and Growth from Heterophases and the Exploitation of New Toughening Mechanisms in Metals
	Guo, Yi 1; Paramatmuni, Chaitanya 2; Avcu, Egemen 3,4
通讯作者	Guo, Yi(yguo@imr.ac.cn) ; Paramatmuni, Chaitanya(c.paramatmuni@sheffield.ac.uk) ; Avcu, Egemen(egemen.avcu@kocaeli.edu.tr)
	2023-06-01
发表期刊	CRYSTALS
卷号	13 期号:6 页码:31
摘要	Heterophases, such as precipitates, inclusions, second phases, or reinforcement particles, often drive void nucleation due to local incompatibilities in stresses/strains. This results in a significant life-limiting condition, as voids or their coalescence can lead to microcracks that reduce the ductility and fatigue life of engineering components. Continuum-mechanics-based analytical models have historically gained momentum due to their relative ease in predicting failure strain. The momentum of such treatment has far outpaced the development of theories at the atomic and micron scales, resulting in an insufficient understanding of the physical processes of void nucleation and growth. Evidence from the recent developments in void growth theories indicates that the evolution of voids is intrinsically linked to dislocation activity at the void-matrix interface. This physical growth mechanism opens up a new methodology for improving mechanical properties using hydrostatic pressurization. According to the limited literature, with a hydrostatic pressure close to 1 GPa, aluminium matrix composites can be made 70 times more ductile. This significant ductility enhancement arises from the formation of dislocation shells that encapsulate the heterophases and inhibit the void growth and coalescence. With further investigations into the underlying theories and developments of methods for industrial implementations, hydrostatic pressurization has the potential to evolve into an effective new method for improving the ductility and fatigue life of engineering components with further development.
关键词	strength and ductility void nucleation and growth hydrostatic pressure toughening
资助者	National Natural Science Foundation of China ; National Science and Technology Major Project
DOI	10.3390/cryst13060860
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52201149] ; National Science and Technology Major Project[J2019-VI-0019-0134]
WOS研究方向	Crystallography ; Materials Science
WOS类目	Crystallography ; Materials Science, Multidisciplinary
WOS记录号	WOS:001014199000001
出版者	MDPI
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/178343
专题	中国科学院金属研究所
通讯作者	Guo, Yi; Paramatmuni, Chaitanya; Avcu, Egemen
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sheffield, Dept Mat Sci & Engn, Sheffield S1 3JD, England 3.Kocaeli Univ, Inst Nat & Appl Sci, Dept Mech Engn, TR-41001 Kocaeli, Turkiye 4.Kocaeli Univ, Ford Otosan Ihsaniye Automot Vocat Sch, TR-41650 Kocaeli, Turkiye
推荐引用方式 GB/T 7714	Guo, Yi,Paramatmuni, Chaitanya,Avcu, Egemen. Void Nucleation and Growth from Heterophases and the Exploitation of New Toughening Mechanisms in Metals[J]. CRYSTALS,2023,13(6):31.
APA	Guo, Yi,Paramatmuni, Chaitanya,&Avcu, Egemen.(2023).Void Nucleation and Growth from Heterophases and the Exploitation of New Toughening Mechanisms in Metals.CRYSTALS,13(6),31.
MLA	Guo, Yi,et al."Void Nucleation and Growth from Heterophases and the Exploitation of New Toughening Mechanisms in Metals".CRYSTALS 13.6(2023):31.