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Critical serrated flow features during nanoindentation in La-based bulk metallic glasses | |
Peng W(彭伟); Zhang TH(张泰华); Liu Y(刘渊); Li L(李磊); Wei BC(魏炳忱); Wei, B (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China. | |
发表期刊 | Journal of University of Science and Technology Beijing |
2007 | |
卷号 | 14页码:8-12 |
ISSN | 1005-8850 |
摘要 | La57.6Al17.5(Cu,Ni)(24.9) and La64Al14(Cu,Ni)(22) bulk metallic glasses (BMGs) were prepared by copper-mould casting method. Plastic deformation behavior of the two BMGs at various loading rates was studied by nanoindentation. The results showed that the La57.6Al17.5(Cu,Ni)(24.9) BMG with a glass transition temperature of 423 K exhibited prominent serrated flow at low loading rates, whereas less pronounced serrated flow at high rates during nanoindentation. In contrast, the La64Al14(Cu,Ni)(22) BMG with a glass transition temperature of 401 K exhibited prominent serrated flow at high loading rates. The different rate dependency of serrated flow in the two La-based BMGs is related to the different glass transition temperature, and consequently the degree of viscous flow during indentation at room temperature. A smoother flow occurs in the alloy with relatively lower glass transition temperature, due to the relaxation of stress concentration. |
关键词 | Bulk Metallic Glass Nanoindentation Serrated Flow Shear Band Plastic-deformation Temperature Behavior Alloy |
DOI | 10.1016/S1005-8850(07)60098-X |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000250593400003 |
关键词[WOS] | PLASTIC-DEFORMATION ; TEMPERATURE ; BEHAVIOR ; ALLOY |
WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing |
WOS类目 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mining & Mineral Processing |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/33877 |
专题 | 力学所知识产出(1956-2008) |
通讯作者 | Wei, B (reprint author), Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100080, Peoples R China. |
推荐引用方式 GB/T 7714 | Peng W,Zhang TH,Liu Y,et al. Critical serrated flow features during nanoindentation in La-based bulk metallic glasses[J]. Journal of University of Science and Technology Beijing,2007,14:8-12. |
APA | 彭伟,张泰华,刘渊,李磊,魏炳忱,&Wei, B .(2007).Critical serrated flow features during nanoindentation in La-based bulk metallic glasses.Journal of University of Science and Technology Beijing,14,8-12. |
MLA | 彭伟,et al."Critical serrated flow features during nanoindentation in La-based bulk metallic glasses".Journal of University of Science and Technology Beijing 14(2007):8-12. |
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