TY - GEN
T1 - Deformation evolution of a Zr-based bulk metallic glass under three-point bending tests
AU - Chen, S. H.
AU - Chan, Kang Cheung
AU - Xia, L.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Bending tests have been used extensively to assess the plastic deformation behavior of bulk metallic glasses (BMGs), however, a detailed experimental investigation of the deformation evolution of BMGs during such bending tests have been rarely reported. In the present work, the deformation evolution of a Zr-based BMG during three-point bending has been studied, and four distinct deformation evolution stages have been observed. After the elastic stage (stage I), the specimen starts to undergo some local plastic deformation while the bending curve still manifests an "elastic" state (stage II). In stage III, the specimen undergoes relatively stable plastic deformation. Finally, in stage IV, more plastic deformation occurs on the tensile side of the bending specimen resulting in the final fracture of the specimen. The current findings provide a fundamental understanding of the deformation mechanisms of BMGs under bending tests, which lays down a good foundation for further investigation of the deformation behavior of BMGs under more complex stress states.
AB - Bending tests have been used extensively to assess the plastic deformation behavior of bulk metallic glasses (BMGs), however, a detailed experimental investigation of the deformation evolution of BMGs during such bending tests have been rarely reported. In the present work, the deformation evolution of a Zr-based BMG during three-point bending has been studied, and four distinct deformation evolution stages have been observed. After the elastic stage (stage I), the specimen starts to undergo some local plastic deformation while the bending curve still manifests an "elastic" state (stage II). In stage III, the specimen undergoes relatively stable plastic deformation. Finally, in stage IV, more plastic deformation occurs on the tensile side of the bending specimen resulting in the final fracture of the specimen. The current findings provide a fundamental understanding of the deformation mechanisms of BMGs under bending tests, which lays down a good foundation for further investigation of the deformation behavior of BMGs under more complex stress states.
KW - Bulk metallic glass
KW - Deformation evolution
KW - Shear bands
KW - Three-point bending
UR - http://www.scopus.com/inward/record.url?scp=84901588472&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.939.31
DO - 10.4028/www.scientific.net/AMR.939.31
M3 - Conference article published in proceeding or book
SN - 9783038350972
T3 - Advanced Materials Research
SP - 31
EP - 38
BT - Advances in Materials and Processing Technologies XVI
PB - Trans Tech Publications
T2 - 16th International Conference on Advanced Materials and Processing Technologies, AMPT 2013
Y2 - 22 September 2013 through 26 September 2013
ER -