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Mode III fracture toughness of the Zr61Ti2Cu25Al12 bulk metallic glass
Song, Zhen-Qiang; Ma, Evan; Xu, Jian; Xu, J (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
2016-05-01
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume109Pages:275-285
AbstractThe intrinsic mode III fracture initiation toughness is measured for the Zr61Ti2Cu25Al12 (ZT1) bulk metallic glass (BMG), which is known to have a high mode I fracture toughness (K-IC). The plastic strain intensity factor Gamma(III) was used as a measure of the fracture resistance under elastic-plastic conditions. The intrinsic mode III fracture initiation toughness of ZT1 BMG, Gamma(IIIC) is found to be 29 mu m, equivalent to a K-IIIC of 51 MPa root m. The corresponding fracture energy release rate is similar to or higher than that of conventional engineering metals such as high-strength aluminum alloys and some steels. The subcritical crack growth in ZT1 prior to catastrophic fracture is characterized by an extension of a microscopically zig-zag crack front. ZT1 exhibits a relatively low ratio of K-IIIC/K-IC of similar to 0.39, indicating that the material is more susceptible to mode III fracture. In engineering design with BMGs, the mode III fracture toughness is thus a useful baseline to ensure the reliability of structural components. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
description.department[song, zhen-qiang ; xu, jian] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china ; [ma, evan] johns hopkins univ, dept mat sci & engn, baltimore, md 21218 usa
KeywordMetallic Glasses Fracture Toughness Crack Propagation Torsional Loading
Subject AreaMaterials Science ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China [51571192]; [US-NSF-DMR-1505621]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75888
Collection中国科学院金属研究所
Corresponding AuthorXu, J (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Song, Zhen-Qiang,Ma, Evan,Xu, Jian,et al. Mode III fracture toughness of the Zr61Ti2Cu25Al12 bulk metallic glass[J]. ACTA MATERIALIA,2016,109:275-285.
APA Song, Zhen-Qiang,Ma, Evan,Xu, Jian,&Xu, J .(2016).Mode III fracture toughness of the Zr61Ti2Cu25Al12 bulk metallic glass.ACTA MATERIALIA,109,275-285.
MLA Song, Zhen-Qiang,et al."Mode III fracture toughness of the Zr61Ti2Cu25Al12 bulk metallic glass".ACTA MATERIALIA 109(2016):275-285.
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