Effect of Loading Rate on Dynamic Fracture Morphology of a Zr-Based Bulk Metallic Glass

被引：2

作者：

Khanolkar, Gauri R. ^{[1
]}

Haghighat, Shima ^{[1
]}

Hodge, Andrea M. ^{[1
]}

Flores, Katharine M. ^{[2
]}

Eliasson, Veronica ^{[1
]}

机构：

[1] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA

[2] Washington Univ, Dept Mech Engn & Mat Sci, St Louis, MO 63130 USA

来源：

MATERIALS TRANSACTIONS | 2015年 / 56卷 / 06期

关键词：

bulk metallic glass (BMG); impact experiment; scanning electron microscopy (SEM); STRAIN-RATE; DEFORMATION-BEHAVIOR; COMPRESSIVE BEHAVIOR; SURFACE-MORPHOLOGY; STRENGTH; FAILURE;

D O I：

10.2320/matertrans.M2014467

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Low-velocity plate impact experiments using a single-stage gas-gun are performed on Zr58.5Cu15.6Ni12.8Al10.3Nb2.8. Compressive fracture surfaces of the samples subjected to varying impact velocities and stress amplitudes are evaluated in order to study their loading rate dependence. Samples impacted at increasing loading rates, from increasing velocities of impact, show a larger extent of localized melting while those subjected to increasing stress show a transition from ductile to brittle fracture. These observations suggest that the mechanisms and morphology of fracture are strain-rate dependent.

引用

页码：840 / 843

页数：4

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