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| Characterization of Shear Banding in La-Based Bulk Metallic Glasses Through Indentation | |
Peng W(彭伟) ; Wei BC(魏炳忱); Zhang TH(张泰华); Liu Y(刘渊); Li L(李磊); Wei, B (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China.
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| Source Publication | MATERIALS TRANSACTIONS
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| 2007 | |
| Volume | 48Issue:7Pages:1759-1764 |
| ISSN | 1345-9678 |
| Abstract | La64Al14(Cu,Ni)(22), La(63.1)All(5.2)(Cu,Ni)(21.7), La57.6Al17.5(Cu,Ni)(24.9), and La55Al25Cu10Ni5Co5 bulk metallic glasses (BMGs) with low glass transition temperature (T-g) were prepared by copper-mould casting method. The homologous temperature (the ratio of room temperature to T-g) of the four BMGs ranges from 0.64 to 0.73. Plastic deformation behavior of the BMGs at various loading rates was studied by nanoindentation. The results showed that the loading rate dependency of serrated flow, which is related to the nucleation and propagation of shear bands, depends strongly on the homologous temperature. The alloys with relatively high homologous temperature exhibit an increase in flow serration with increasing loading rate. whereas. the alloys with low homologous temperature exhibit prominent serrations at low rates. No distinct shear band is observed around the indents for all alloys after nanoindentation at all the studied loading rates. Alternately, shear band pattern are characterized through macro-indentation. which shows that shear band spacing decreases with the increase of the homologous temperature. |
| Keyword | Bulk Metallic Glass Plastic Deformation Shear Band Nanoindentation |
| DOI | 10.2320/matertrans.MJ200761 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000248743100038 |
| WOS Keyword | INSTRUMENTED INDENTATION ; PLASTIC-DEFORMATION ; FLOW ; NANOINDENTATION ; ALLOY |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/58448 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Wei, B (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China. |
| Recommended Citation GB/T 7714 | Peng W,Wei BC,Zhang TH,et al. Characterization of Shear Banding in La-Based Bulk Metallic Glasses Through Indentation[J]. MATERIALS TRANSACTIONS,2007,48,7,:1759-1764. |
| APA | 彭伟,魏炳忱,张泰华,刘渊,李磊,&Wei, B .(2007).Characterization of Shear Banding in La-Based Bulk Metallic Glasses Through Indentation.MATERIALS TRANSACTIONS,48(7),1759-1764. |
| MLA | 彭伟,et al."Characterization of Shear Banding in La-Based Bulk Metallic Glasses Through Indentation".MATERIALS TRANSACTIONS 48.7(2007):1759-1764. |
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| JourArSuppl2016-158.（324KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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