Mechanical and Fatigue Behavior of Ca65Mg15Zn20 Bulk-Metallic Glass

The compression behavior of a Ca65Mg15Zn20 bulk‐metallic glass (BMG) was studied. The specimens showed no macroscopic plasticity. They fractured by exploding into many very small pieces. The Vickers hardness of the Ca65Mg15Zn20 BMG was about 1.42 GPa. The fatigue limit for compression–compression fa...

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Bibliographic Details
Published inAdvanced engineering materials Vol. 11; no. 1-2; pp. 27 - 34
Main Authors Wang, Gongyao, Liaw, Peter K., Senkov, Oleg N., Miracle, Daniel B., Morrison, Mark L.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 01.01.2009
WILEY‐VCH Verlag
Wiley-VCH
Subjects
bulk metallic glass
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
fatigue
Fatigue, brittleness, fracture, and cracks
hardness
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Physics
Metallic glasses
Calcium base alloys
Vickers hardness
Shear
Ruptures
Compressive testing
Plasticity
Fatigue
Fatigue limit
Rupture strength
Fractography
Fracture mode
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Summary:The compression behavior of a Ca65Mg15Zn20 bulk‐metallic glass (BMG) was studied. The specimens showed no macroscopic plasticity. They fractured by exploding into many very small pieces. The Vickers hardness of the Ca65Mg15Zn20 BMG was about 1.42 GPa. The fatigue limit for compression–compression fatigue was found to be about 140 MPa after 106 cycles. The fracture strength was inversely proportional to the fracture time. The proposed mechanism of the splitting and shear fracture modes clearly explained these properties.
Bibliography:National Science Foundation: the Division of the Design, Manufacture, and Industrial Innovation Program - No. DMI-9724476
International Materials Institutes (IMI) Program - No. DMR-0231320
istex:A2699EC5075D180B91ADEC1F412210B877FB89DB
Integrative Graduate Education and Research Training (IGERT) Program - No. DGE-9987548
Major Research Instrumentation (MRI) Program - No. DMR-0421219
We would like to acknowledge the financial support of the National Science Foundation: the Division of the Design, Manufacture, and Industrial Innovation Program, under Grant No. DMI-9724476; the Combined Research-Curriculum Development (CRCD) Programs, under EEC-9527527 and EEC-0203415; the Integrative Graduate Education and Research Training (IGERT) Program, under DGE-9987548; the International Materials Institutes (IMI) Program, under DMR-0231320; and the Major Research Instrumentation (MRI) Program, under DMR-0421219, to the University of Tennessee, Knoxville, with Dr. D. Durham, Ms. M. Poats, Dr. C. J. Van Hartesveldt, Dr. J. Giordan, Dr. D. Dutta, Dr. W. Jennings, Dr. L. Goldberg, Dr. C. Huber, and Dr. C. R. Bouldin as Program Directors, respectively. Work at the Air Force Research Laboratory (AFRL) was conducted through the AFRL on-site contract No. FA8650-04-D-5233 and through an AFOSR Task (01ML05-COR, Dr. J. Fuller, Program Manager).
ark:/67375/WNG-7PXQS7XZ-T
Combined Research-Curriculum Development (CRCD) Programs - No. EEC-9527527; No. EEC-0203415
ArticleID:ADEM200800313
We would like to acknowledge the financial support of the National Science Foundation: the Division of the Design, Manufacture, and Industrial Innovation Program, under Grant No. DMI‐9724476; the Combined Research‐Curriculum Development (CRCD) Programs, under EEC‐9527527 and EEC‐0203415; the Integrative Graduate Education and Research Training (IGERT) Program, under DGE‐9987548; the International Materials Institutes (IMI) Program, under DMR‐0231320; and the Major Research Instrumentation (MRI) Program, under DMR‐0421219, to the University of Tennessee, Knoxville, with Dr. D. Durham, Ms. M. Poats, Dr. C. J. Van Hartesveldt, Dr. J. Giordan, Dr. D. Dutta, Dr. W. Jennings, Dr. L. Goldberg, Dr. C. Huber, and Dr. C. R. Bouldin as Program Directors, respectively. Work at the Air Force Research Laboratory (AFRL) was conducted through the AFRL on‐site contract No. FA8650‐04‐D‐5233 and through an AFOSR Task (01ML05‐COR, Dr. J. Fuller, Program Manager).
ObjectType-Article-2
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ISSN:1438-1656
1527-2648
DOI:10.1002/adem.200800313