Macroscopic viscoelastic deformation at room temperature in mechanically rejuvenated Zr-based metallic glass

In a hydrogen-doped metallic glass, there appear low-temperature and high-temperature internal friction peaks respectively associated with a point-defect relaxation and the crystallization. The high-temperature-side slope of low-temperature peak and also the low-temperature-side slope of high-temperature peak enhance the background internal friction near the room temperature. A hydrogen-doped Mg-base metallic glass was proposed as a high-damping material to be used near and somewhat above the room temperature. Stability of the high damping was also checked.

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Influence of Thermoplastic Deformation Conditions on Strength Properties of Zr60Cu25Al10Ni5 Bulk Metallic Glass at Room Temperature

Journal of the Society of Materials Science Japan ◽

10.2472/jsms.58.486 ◽

2009 ◽

Vol 58 (6) ◽

pp. 486-492 ◽

Cited By ~ 1

Author(s):

Takamasa YOSHIKAWA ◽

Tadashi INABA ◽

Masataka TOKUDA

Keyword(s):

Metallic Glass ◽

Bulk Metallic Glass ◽

Room Temperature ◽

Strength Properties

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Zr-based bulk metallic glass with super-plasticity under uniaxial compression at room temperature

Journal of Non-Crystalline Solids ◽

10.1016/j.jnoncrysol.2008.04.012 ◽

2008 ◽

Vol 354 (31) ◽

pp. 3742-3746 ◽

Cited By ~ 15

Author(s):

Ping-Jun Tao ◽

Yuan-Zheng Yang ◽

Xiao-Jun Bai ◽

Zhi-Wei Xie ◽

Xian-Chao Chen ◽

...

Keyword(s):

Metallic Glass ◽

Bulk Metallic Glass ◽

Uniaxial Compression ◽

Room Temperature

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Size dependent plasticity of a Zr-based bulk metallic glass during room temperature compression

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2009.12.174 ◽

2010 ◽

Vol 493 (1-2) ◽

pp. 142-147 ◽

Cited By ~ 16

Author(s):

N. Li ◽

Q. Chen ◽

L. Liu

Keyword(s):

Metallic Glass ◽

Bulk Metallic Glass ◽

Room Temperature ◽

Dependent Plasticity ◽

Size Dependent

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Compressive Plasticity of Zr-Based Bulk Metallic Glass at Low Temperature

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.443-444.583 ◽

2012 ◽

Vol 443-444 ◽

pp. 583-586

Author(s):

Ya Juan Sun ◽

Ri Ga Wu ◽

Hong Jing Wang

Keyword(s):

Mechanical Properties ◽

Low Temperature ◽

Metallic Glass ◽

Bulk Metallic Glass ◽

Low Temperatures ◽

Room Temperature ◽

Shear Bands ◽

Strain Curve ◽

Testing Temperature ◽

Stress Strain Curve

The mechanical properties of a new Zr-based bulk metallic glass at low temperatures were investigated. The results indicate that the fracture strength increases significantly (4.9%) and the global plasticity increases somewhat when testing temperature is lowered to 123K. The stress-strain curve of the sample deformed exhibits more serrations and smaller stress drop due to formation of more shear bands at low temperature than at room temperature.

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Effect of mechanical-annealing on the mechanical properties of a Zr-based bulk metallic glass

International Journal of Modern Physics B ◽

10.1142/s0217979219400526 ◽

2019 ◽

Vol 33 (01n03) ◽

pp. 1940052

Author(s):

P. Deng ◽

X. C. Wang ◽

F. Zhang ◽

X. M. Qin ◽

P. Gao ◽

...

Keyword(s):

Mechanical Properties ◽

Yield Strength ◽

Metallic Glass ◽

Bulk Metallic Glass ◽

Room Temperature ◽

Constant Pressure ◽

Aging Treatment ◽

Model Material ◽

Glass Forming ◽

Plastic Stage

The mechanical-annealing referred in this work is also named pre-strain, which is widely investigated in TRIP steel, stainless steel, magnesium alloy and aluminum alloy. In this case, we used preloading to input energy into a bulk metallic glass (BMG) to observe the changes in the structure and mechanical properties. We selected Zr[Formula: see text]Co[Formula: see text]Al[Formula: see text] BMG as a model material owning to its outstanding glass forming ability and excellent mechanical properties. The samples were kept at a constant pressure of 1900, 1700 and 1500 MPa (below the yield strength) for 40, 55 and 70 h. The study found out that the density of those samples increased after being pre-loaded. Then, the samples underwent aging treatment at room-temperature for more than 30 days after unloading. After re-compressing the samples, the results show that the yield strength and fracture strength of the samples decreased, and the amplitude of the serrated plastic flow increased during the plastic stage. Our finding might have some implications for understanding the plastic deformation of BMGs.

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