NUCLEATION AND BLUNTNESS OF NANOCRACKS IN BRASS

Acta Metall Sin

1994, Vol. 30

Issue (8): 362-367 DOI:

Current Issue | Archive | Adv Search

NUCLEATION AND BLUNTNESS OF NANOCRACKS IN BRASS

GU Biao; ZHANG Jingwu; QIAO Lijie; CHEN Qizhi; CHU Wuyang; XIAO Jimei(University of Science and Technology Beijing)

Cite this article:

GU Biao; ZHANG Jingwu; QIAO Lijie; CHEN Qizhi; CHU Wuyang; XIAO Jimei(University of Science and Technology Beijing). NUCLEATION AND BLUNTNESS OF NANOCRACKS IN BRASS. Acta Metall Sin, 1994, 30(8): 362-367.

Download:

PDF(423KB)
Export: BibTeX | EndNote (RIS)

Abstract The in situ tensile test under TEM for thin foil specimen of brass showed that a lot of dislocations could be emitted from a loaded crack tip and a dislocation free zone(DFZ) could form after reaching equilibrium. The DFZ was a nonlinearly elastic zone with large strain(ε≈0. 1) and the stress in the DFZ might equal to the cohesive strength σ_(th) when the crack tip was sharp enough and an applied stress was large enough. As a result, a nanocrack initiated discontinuously in the DFZ or sometimes at a blunted-crack tip. As soon as the nanocrack nucleated, it would quickly blunt into a void even under keeping constant displacement.

Key words: brass dislocation free zone nanocrack void

Received: 18 August 1994

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors

URL:

https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1994/V30/I8/362

1WilsdorfHGF．MaterSciEng,1983;59:12OhrSM,MaterSciEng,1985;72:13姚可夫,唐乃泳,陈南平．金属学报,1989;25:A213姚可夫,唐乃泳,陈南平．金属学报,1991,27:A984黎晶,张统一,褚武扬,肖纪美．金属学报,1988;24(SupplⅡ):SA1345陈奇志,褚武扬,肖纪美．中国科学,1994;A24:2916张跃,王燕斌,褚武扬,肖纪美．中国科学,1994;A24(6)7高克玮,陈奇志,褚武扬,肖纪美．中国科学,待发表8Hirschp,HowieA,NicholsonRB,PashleyDW,WhelanMJ,ElectronMirceoscopyofThinCrystals．2nded,Huntington:RobertE．KriegerPubCo．,1977:3649HirthJP,LotheJ．TheoryofDistocations,2nded,NewYork:Wiley,1982:23010ThomsonAW,KnottJF,MetallTrans,1993;24A:52311重有色金属材料加工手册．北京:冶金工业出版社,1979:7012WeertmanJ,LinIH,ThomsonR．ActaMetall．1983;31:47313褚武扬．断裂力学基础．北京:科学出版社,1979:11614CherepanovGP．MechanicsofBrittleFracture．NewYork:McGraw-Hill,1979:29

[1]	ZHAO Yafeng, LIU Sujie, CHEN Yun, MA Hui, MA Guangcai, GUO Yi. Critical Inclusion Size and Void Growth in Dual-Phase Ferrite-Bainite Steel During Ductile Fracture[J]. 金属学报, 2023, 59(5): 611-622.
[2]	Yingjun GAO, Yujiang LU, Lingyi KONG, Qianqian DENG, Lilin HUANG, Zhirong LUO. Phase Field Crystal Model and Its Application for Microstructure Evolution of Materials[J]. 金属学报, 2018, 54(2): 278-292.
[3]	Jun SUN, Suzhi LI, Xiangdong DING, Ju LI. Hydrogenated Vacancy: Basic Properties and Its Influence on Mechanical Behaviors of Metals[J]. 金属学报, 2018, 54(11): 1683-1692.
[4]	Biao YANG,Bailin ZHENG,Xingjian HU,Pengfei HE,Zhufeng YUE. EFFECT OF VOID ON NANOINDENTATION PROCESS OF Ni-BASED SINGLE CRYSTAL ALLOY[J]. 金属学报, 2016, 52(2): 129-134.
[5]	Dianzhong LI, Xuan MA, Bin XU, Mingyue SUN. DESIGN OF FORGING METHODS OF HEALING DEFECTS IN INGOTS EFFECTIVELY[J]. 金属学报, 2016, 52(10): 1199-1206.
[6]	Yanli LU,Guangming LU,Tingting HU,Tao YANG,Zheng CHEN. PHASE FIELD CRYSTAL STUDY ON THE FORMATION AND EVOLUTION OF PHASE BOUNDARY VOID INDUCED BY THE KIRKENDALL EFFECT[J]. 金属学报, 2015, 51(7): 866-872.
[7]	Wenjing MA,Changbo KE,Minbo ZHOU,Shuibao LIANG,Xinping ZHANG. PHASE-FIELD CRYSTAL SIMULATION ON EVOLU- TION AND GROWTH KINETICS OF KIRKENDALL VOIDS IN INTERFACE AND INTERMETALLIC COMPOUND LAYER IN Sn/Cu SOLDERING SYSTEM[J]. 金属学报, 2015, 51(7): 873-882.
[8]	XUE Yingyu, TANG Jiancheng, ZHUO Haiou, YE Nan, WU Tong, ZHOU Xusheng. MICROSTRUCTURES AND PROPERTIES OF LEAD-FREE FREE-CUTTING GRAPHITE-BRASS PREPARED BY GRAPHITIZATION OF CEMENTITE[J]. 金属学报, 2015, 51(2): 223-229.
[9]	MO Yongda, JIANG Yanbin, LIU Xinhua, XIE Jianxin. MECHANICAL PROPERTIES AND WORK HARDENING BEHAVIOR OF COLUMNAR-GRAINED HAl77-2 BRASS[J]. 金属学报, 2014, 50(11): 1367-1376.
[10]	WANG Xue1, PAN Qiangang2, TAO Yongshun2, ZHANG Yinglin1,ZENG Huiqiang2,LIU Hong2. TYPE IV CREEP RUPTURE CHARACTERISTICS OF P92 STEEL WELDMENT[J]. 金属学报, 2012, 48(4): 427-434.
[11]	XU Bin SUN Mingyue LI Dianzhong. THE VOID CLOSE BEHAVIOR OF LARGE INGOTS DURING HOT FORGING[J]. 金属学报, 2012, 48(10): 1194-1200.
[12]	LI Shijian SUN Mingyue LIU Hongwei LI Dianzhong. STUDY ON VOID HEALING BEHAVIOR DURING FORGING PROCESS FOR 25Cr2Ni4MoV STEEL[J]. 金属学报, 2011, 47(7): 946-953.
[13]	LI Xunping ZHOU Minbo XIA Jianmin MA Xiao ZHANG Xinping. EFFECT OF THE CROSS-INTERACTION ON THE FORMATION AND EVOLUTION OF INTERMETALLIC COMPOUNDS IN Cu(Ni)/Sn-Ag-Cu/Cu(Ni) BGA STRUCTURE SOLDER JOINTS[J]. 金属学报, 2011, 47(5): 611-619.
[14]	KANG Mokuang ZHANG Mingxing LIU Feng ZHU Ming. OVERALL ACTIVATION ENERGY OF ISOTHERMAL TRANSFORMATION IN METAL ALLOY AND ITS MECHANISM II. Isothermal Transformation in β Brasses[J]. 金属学报, 2009, 45(1): 32-36.
[15]	. [J]. 金属学报, 2007, 43(10): 1037-1042 .

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed