Strain rate effects on the yielding strength and maximum temperature at shear bands in a Zr-based bulk metallic glass

The effects of strain rate on the yielding strength and maximum temperature at shear bands in a typical Zr41.2Ti13.8Ni10Cu12.5Be22.5 (Vit 1) bulk metallic glass are investigated under tension and compression over a wide range of strain rates at ambient temperature. Using the modified cooperative shear model incorporating the notable internal thermal effect at high strain rates, the transition of the strain rate effect of yielding strength from the sudden decrease to the subsequent slow change with increasing the strain rate is quantitatively characterized. The fracture surface temperature evolution under different shear band evolution times is captured by a hierarchical multi-scale model of heat conduction. Dynamic strain rates shorten the shear band evolution time, leading to an increase in the maximum temperature at shear bands compared to quasi-static loadings.

[1]  Xingwang Cheng,et al.  Dynamic fracture behavior of Zr63Cu12Ni12Al10Nb3 metallic glass under high strain-rate loading , 2021 .

[2]  L. Lu,et al.  Cup-cone structure in spallation of bulk metallic glasses , 2019, Acta Materialia.

[3]  Sen-Yue Yang,et al.  Effect of strain rate on yielding strength of a Zr-based bulk metallic glass , 2017 .

[4]  X. Gong,et al.  Ductile fracture of bulk metallic glass Zr50Cu40Al10 under high strain-rate loading , 2016 .

[5]  Z. Zhang,et al.  Compressive fracture morphology and mechanism of metallic glass , 2013 .

[6]  H. Fan,et al.  The effects of annealing on the microstructure and the dynamic mechanical strength of a ZrCuNiAl bulk metallic glass , 2013 .

[7]  V. Shim,et al.  La-based bulk metallic glass failure analysis under static and dynamic loading , 2013 .

[8]  R. Qu,et al.  A universal fracture criterion for high-strength materials , 2013, Scientific Reports.

[9]  Weidong Liu,et al.  Notable internal thermal effect on the yielding of metallic glasses , 2012 .

[10]  P. Liaw,et al.  Influence of Strain Rate on Compressive Deformation Behavior of a Zr-Cu-Ni-Al Bulk Metallic Glass at Room Temperature , 2011 .

[11]  N. Thadhani,et al.  Mechanical properties of bulk metallic glasses , 2010 .

[12]  J. Lewandowski,et al.  Compressive plasticity and toughness of a Ti-based bulk metallic glass , 2010 .

[13]  Jinshan Li,et al.  Effect of strain rate on compressive behavior of Ti-based bulk metallic glass at room temperature , 2009 .

[14]  G. Subhash,et al.  Evolution of shear bands in bulk metallic glasses under dynamic loading , 2008 .

[15]  G. Subhash,et al.  Local heating and viscosity drop during shear band evolution in bulk metallic glasses under quasistatic loading , 2007 .

[16]  Hyoung-Seop Kim,et al.  Effect of strain rate on compressive behavior of Ti45Zr16Ni9Cu10Be20 bulk metallic glass , 2007 .

[17]  Jingxue Sun,et al.  Bulk metallic glasses: Smaller is softer , 2007 .

[18]  J. Lewandowski,et al.  Local temperature rises during mechanical testing of metallic glasses , 2007 .

[19]  A. L. Greer,et al.  Thickness of shear bands in metallic glasses , 2006 .

[20]  J. Lewandowski,et al.  Temperature rise at shear bands in metallic glasses , 2006 .

[21]  G. Subhash,et al.  Negative strain rate sensitivity and compositional dependence of fracture strength in Zr/Hf based bulk metallic glasses , 2003 .

[22]  C. Schuh,et al.  Atomistic basis for the plastic yield criterion of metallic glass , 2003, Nature materials.

[23]  C. Liu,et al.  Test environments and mechanical properties of Zr-base bulk amorphous alloys , 1998 .

[24]  W. Johnson,et al.  A highly processable metallic glass: Zr41.2Ti13.8Cu12.5Ni10.0Be22.5 , 1993 .

[25]  A. Argon.  Plastic deformation in metallic glasses , 1979 .

[26]  H. Chen.  Stored energy in a cold-rolled metallic glass , 1976 .