Shear Modulus Relaxation and Thermal Effects in a Zr65Cu15Ni10Al10 Metallic Glass after Inhomogeneous Plastic Deformation

Abstract In a recent paper A. A. Ilyushin drew attention to the remarkable simplicity which the theory of plastic deformation assumes when the secant shear modulus is taken as a power of the octahedral shearing stress. In the present paper Ilyushin’s results are discussed in connection with a specific example and it is shown that great caution is indicated in the use of such power laws.

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Effects of Peening on Resistance to Plastic Deformation in a Metallic Glass

Rapidly Quenched Metals 6 ◽

10.1016/b978-1-85166-972-1.50106-8 ◽

1988 ◽

pp. 505-507

Author(s):

YOSHITAKE NISHI ◽

HIDEHIKO HARANO ◽

HISAYOSHI ISHIZUKI ◽

MAMORU KAWAKAMI ◽

ETSUJIRO YAJIMA

Keyword(s):

Plastic Deformation ◽

Metallic Glass

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Computer Simulation of Plastic Deformation in Tial Alloys in the Presence of Chromium

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.386.383 ◽

2018 ◽

Vol 386 ◽

pp. 383-387 ◽

Cited By ~ 1

Author(s):

Anton Gnidenko

Keyword(s):

Computer Simulation ◽

Plastic Deformation ◽

Shear Modulus ◽

Titanium Aluminide ◽

Shear Resistance ◽

Quantum Mechanical ◽

Quantum Mechanical Calculations ◽

Tial Alloys ◽

Shear Rupture ◽

Titanium Vacancy

Quantum-mechanical calculations were used to investigate shear rupture in intermetallic titanium aluminide (TiAl) alloys in the presence of vacancy or chromium dopant. The substitution of both Ti and Al atoms by Cr atoms in the γ-TiAl crystal lattice was considered. The simulation of shear was carried out in the (111) slip plane along two directions, namely the [110] and [11-2]. The decrease in the shear resistance of the defects present in the γ-TiAl lattice was estimated. It was shown that when chromium occupies a titanium vacancy, it can compensate for this defect by increasing the shear modulus for the {111} <110> slip system.

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Improving plasticity of metallic glass by electropulsing-assisted surface severe plastic deformation

Materials & Design ◽

10.1016/j.matdes.2019.107581 ◽

2019 ◽

Vol 165 ◽

pp. 107581 ◽

Cited By ~ 14

Author(s):

Chi Ma ◽

Sergey Suslov ◽

Chang Ye ◽

Yalin Dong

Keyword(s):

Plastic Deformation ◽

Metallic Glass ◽

Severe Plastic Deformation

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Compressive properties of bulk metallic glass with small aspect ratio

Journal of Materials Research ◽

10.1557/jmr.2007.0064 ◽

2007 ◽

Vol 22 (2) ◽

pp. 501-507 ◽

Cited By ~ 34

Author(s):

F.F. Wu ◽

Z.F. Zhang ◽

S.X. Mao

Keyword(s):

Plastic Deformation ◽

Aspect Ratio ◽

Metallic Glass ◽

Bulk Metallic Glass ◽

Deformation Behavior ◽

Shear Bands ◽

Compressive Load ◽

Small Aspect Ratio ◽

Compressive Properties ◽

Deformation Ability

The quasi-static compressive deformation behavior of a Vitreloy 1 bulk metallic glass (BMG) with an aspect ratio of 0.25 was investigated. It is found that the friction and the confinement at the specimen–loading platen interface will cause the dramatic increase in the compressive load, leading to higher compressive strength. In particular, the BMG specimens show great plastic-deformation ability, and plenty of interacted, deflected, wavy, or branched shear bands were observed on the surfaces after plastic deformation. The formation of the strongly interacted, deflected, wavy, or branched shear bands can be attributed to the triaxial stress state in the glassy specimens with a very small aspect ratio.

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