IMECH-IR  > 非线性力学国家重点实验室
Softening of Zr-based metallic glass induced by nanosecond pulsed laser irradiation
Huang H; Jiang MQ(蒋敏强); Yan JW
Source PublicationJOURNAL OF ALLOYS AND COMPOUNDS
2018-07-25
Volume754Pages:215-221
ISSN0925-8388
AbstractLaser irradiation has been recently used to tune the mechanical properties of metallic glasses (MGs). However, the mechanism for plasticity improvement by laser irradiation is still not completely clear and requires further investigation. In this study, nanosecond pulsed laser irradiation is applied on a Zr-based MG surface under various laser powers, scanning speeds, and numbers of irradiation cycles. Then, the mechanical properties of the as-cast and laser-irradiated MG surfaces are characterized by nanoindentation tests. In particular, the indentation hardness, load-depth curve, serrated flow, and residual indent morphology of the surfaces are compared. The results show that the nanosecond pulsed laser irradiation softens the irradiated regions; the effect of the irradiation is slightly dependent on the laser irradiation parameters, and especially the laser scanning speed. Furthermore, laser irradiation considerably affects serrated flows in the load-depth curve and shear bands on the top surface, denoting different plastic deformation characteristics compared with the non-irradiated sample. These differences could be rationalized in terms of laser irradiation-induced formation of pre-existing shear bands in the subsurface layer, as well as thermal effects. The present results are expected to enhance the general understanding of the effects of laser irradiation on the mechanical properties of MGs. (C) 2018 Elsevier B.V. All rights reserved.
KeywordMetallic Glass Laser Irradiation Nanoindentation Softening Serrated Flow Shear Band
DOI10.1016/j.jallcom.2018.04.278
Indexed BySCI ; EI
Language英语
WOS IDWOS:000432675600027
WOS KeywordMECHANICAL-PROPERTIES ; STRUCTURAL INHOMOGENEITY ; PLASTIC-DEFORMATION ; ENHANCED PLASTICITY ; SURFACE TREATMENT ; RESIDUAL-STRESS ; PRE-COMPRESSION ; NANOINDENTATION ; BEHAVIOR ; HARDNESS
WOS Research AreaChemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China(51705197 ; State Key Laboratory of Nonlinear Mechanics(LNM201802) ; China Association for Science and Technology ; Chinese Mechanical Engineering Society (CMES) ; Fundamental Research Funds for the Central Universities ; (26-04048) ; 11522221)
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77507
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Huang H,Jiang MQ,Yan JW. Softening of Zr-based metallic glass induced by nanosecond pulsed laser irradiation[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2018,754:215-221.
APA Huang H,蒋敏强,&Yan JW.(2018).Softening of Zr-based metallic glass induced by nanosecond pulsed laser irradiation.JOURNAL OF ALLOYS AND COMPOUNDS,754,215-221.
MLA Huang H,et al."Softening of Zr-based metallic glass induced by nanosecond pulsed laser irradiation".JOURNAL OF ALLOYS AND COMPOUNDS 754(2018):215-221.
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