IMECH-IR  > 非线性力学国家重点实验室
The ductile to brittle transition behavior in a Zr-based bulk metallic glass
Li G; Jiang MQ(蒋敏强); Jiang F; He L; Sun J; Jiang, F (reprint author), Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.
Source PublicationMaterials Science and Engineering A-Structural Materials Properties Microstructure and Processing
2015-02-11
Volume625Pages:393-402
ISSN0921-5093
AbstractThe ductile to brittle transition (DBT) of crystalline metals and alloys has been extensively studied in scientific and engineering fields. However, the DBT of non-crystalline metals and alloys such as bulk metallic glasses (BMGs) remains poorly characterized and understood. Here, the DBT behavior of a Zr-based (Zr52.5Cu17.9Ni14.6Al10Ti5) BMG as a model material was systematically investigated at various temperatures and different free volume states using uniaxial tensile and compression tests. A significant DBT was confirmed by the observations of the transition of macroscopic fracture modes from shear to tension as well as microscopic fracture surface features from micron-scale vein pattern to nano-scale dimples/periodic corrugations. It is revealed that the former is determined by the intrinsic competition between the critical shear and normal stresses, and the latter is due to the competition between ductile shear banding and brittle cracking. Within the framework of the cooperative shear model of shear transition zones (STZs), a DBT map for metallic glasses is proposed in terms of STZ versus tension transition zone (TTZ), depending on free volume, temperature and strain rate. (C) 2014 Elsevier B.V. All rights reserved.
KeywordDuctile To Brittle Transition Bulk Metallic Glass Fracture Shear Band
Subject AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
DOI10.1016/j.msea.2014.11.088
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000349579000047
Funding OrganizationThe financial support from the National Natural Science Foundation of China (NSFC) under Grant nos. 51171138, 11372315 and 51321003 are gratefully acknowledged. The work was supported by Ph.D. Programs Foundation of Ministry of Education of China (20110201110002).
DepartmentLNM冲击动力学与新型材料力学性能
Classification一类
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49624
Collection非线性力学国家重点实验室
Corresponding AuthorJiang, F (reprint author), Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China.
Recommended Citation
GB/T 7714
Li G,Jiang MQ,Jiang F,et al. The ductile to brittle transition behavior in a Zr-based bulk metallic glass[J]. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,2015,625:393-402.
APA Li G,Jiang MQ,Jiang F,He L,Sun J,&Jiang, F .(2015).The ductile to brittle transition behavior in a Zr-based bulk metallic glass.Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,625,393-402.
MLA Li G,et al."The ductile to brittle transition behavior in a Zr-based bulk metallic glass".Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 625(2015):393-402.
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