Localized heating and serrated plastic flow mechanism in bulk amorphous alloys

Demin Chen; Jianfei Sun; Jun Shen

Localized heating and serrated plastic flow mechanism in bulk amorphous alloys

Demin Chen^*
, Jianfei Sun
, Jun Shen

^*Corresponding author for this work

Academy of Armored Force Engineering China
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

By investigating the serrated flow of Zr_41.2Ti_13.8 Ni₁₀Cu_12.5Be_22.5 bulk amorphous alloy under compression conditions, the temperatures of plastic deformation regions during formation of the shear bands are calculated by using strain energy theory and introducing the ratio of area (A_s/A) as parameters. With the increase of deformation, the strain energy increases and the temperatures in the regions of forming shear bands become higher correspondingly. The temperatures will get to or exceed glass transition temperature when the ratio of A_s/A is equal to or less than 1/4 and the viscosity of deformation region will be reduced greatly, consequently, the balanced strain energy will make the shear band spread, which induces the sample to fracture finally.

Original language	English
Pages (from-to)	196-198
Number of pages	3
Journal	Jinshu Xuebao/Acta Metallurgica Sinica
Volume	41
Issue number	2
State	Published - Feb 2005
Externally published	Yes

Keywords

Bulk amorphous alloy
Localized heating
Mechanical behavior
Serrated plastic flow

Cite this

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title = "Localized heating and serrated plastic flow mechanism in bulk amorphous alloys",

abstract = "By investigating the serrated flow of Zr41.2Ti13.8 Ni10Cu12.5Be22.5 bulk amorphous alloy under compression conditions, the temperatures of plastic deformation regions during formation of the shear bands are calculated by using strain energy theory and introducing the ratio of area (As/A) as parameters. With the increase of deformation, the strain energy increases and the temperatures in the regions of forming shear bands become higher correspondingly. The temperatures will get to or exceed glass transition temperature when the ratio of As/A is equal to or less than 1/4 and the viscosity of deformation region will be reduced greatly, consequently, the balanced strain energy will make the shear band spread, which induces the sample to fracture finally.",

keywords = "Bulk amorphous alloy, Localized heating, Mechanical behavior, Serrated plastic flow",

author = "Demin Chen and Jianfei Sun and Jun Shen",

year = "2005",

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language = "英语",

volume = "41",

pages = "196--198",

journal = "Jinshu Xuebao/Acta Metallurgica Sinica",

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T1 - Localized heating and serrated plastic flow mechanism in bulk amorphous alloys

AU - Chen, Demin

AU - Sun, Jianfei

AU - Shen, Jun

PY - 2005/2

Y1 - 2005/2

N2 - By investigating the serrated flow of Zr41.2Ti13.8 Ni10Cu12.5Be22.5 bulk amorphous alloy under compression conditions, the temperatures of plastic deformation regions during formation of the shear bands are calculated by using strain energy theory and introducing the ratio of area (As/A) as parameters. With the increase of deformation, the strain energy increases and the temperatures in the regions of forming shear bands become higher correspondingly. The temperatures will get to or exceed glass transition temperature when the ratio of As/A is equal to or less than 1/4 and the viscosity of deformation region will be reduced greatly, consequently, the balanced strain energy will make the shear band spread, which induces the sample to fracture finally.

AB - By investigating the serrated flow of Zr41.2Ti13.8 Ni10Cu12.5Be22.5 bulk amorphous alloy under compression conditions, the temperatures of plastic deformation regions during formation of the shear bands are calculated by using strain energy theory and introducing the ratio of area (As/A) as parameters. With the increase of deformation, the strain energy increases and the temperatures in the regions of forming shear bands become higher correspondingly. The temperatures will get to or exceed glass transition temperature when the ratio of As/A is equal to or less than 1/4 and the viscosity of deformation region will be reduced greatly, consequently, the balanced strain energy will make the shear band spread, which induces the sample to fracture finally.

KW - Bulk amorphous alloy

KW - Localized heating

KW - Mechanical behavior

KW - Serrated plastic flow

UR - https://www.scopus.com/pages/publications/15744374537

M3 - 文章

AN - SCOPUS:15744374537

SN - 0412-1961

VL - 41

SP - 196

EP - 198

JO - Jinshu Xuebao/Acta Metallurgica Sinica

JF - Jinshu Xuebao/Acta Metallurgica Sinica

IS - 2

ER -

Localized heating and serrated plastic flow mechanism in bulk amorphous alloys

Abstract

Keywords

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