Physical models for cleavage fracture at various temperatures - Bases for local approach to fracture of HSLA steel

doi:10.1016/j.msea.2007.09.012

	Physical models for cleavage fracture at various temperatures - Bases for local approach to fracture of HSLA steel
	Chen, J. H.
	2008-06-15
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	486 期号:1-2 页码:369-375
摘要	The author proposes the critical events controlling cleavage at various temperatures: at a very low temperature (- 196 degrees C), critical event is the nucleation of a crack in ferrite at the precrack tip. At a moderate low temperature (around - 100 degrees C), the critical event is the propagation of a carbide crack into the ferrite grain. With increasing temperature (around DBTT similar to-80 degrees C), the carbide crack eligible to propagate into the ferrite grain should be the one initiated by a critical strain higher than that to initiate a carbide crack at low temperatures. The higher critical strain increases the flow stress by work hardening for making up the effect of lowering yield stress. At a higher temperature (-30 degrees C) after the crack tip is blunted to more than 60 mu m and a fibrous crack extends, the critical event for cleavage fracture is the propagation of a grain-sized crack. (C) 2007 Elsevier B.V. All rights reserved.
关键词	HSLA steel cleavage physical model local approach transition temperature
DOI	10.1016/j.msea.2007.09.012
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000256266600053
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/35509
专题	兰州理工大学材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Chen, J. H.
作者单位	Lanzhou Univ Technol, State Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Chen, J. H.. Physical models for cleavage fracture at various temperatures - Bases for local approach to fracture of HSLA steel[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2008,486(1-2):369-375.
APA	Chen, J. H..(2008).Physical models for cleavage fracture at various temperatures - Bases for local approach to fracture of HSLA steel.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,486(1-2),369-375.
MLA	Chen, J. H.."Physical models for cleavage fracture at various temperatures - Bases for local approach to fracture of HSLA steel".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 486.1-2(2008):369-375.

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