Thermoplastic forming ability of a Mg-base bulk metallic glass composites reinforced with porous Mo particles

J. S.C. Jang; W. J. Li; T. H. Li; S. R. Jian; J. C. Huang; T. G. Nieh

doi:10.1016/j.intermet.2010.01.022

Thermoplastic forming ability of a Mg-base bulk metallic glass composites reinforced with porous Mo particles

J. S.C. Jang, W. J. Li, T. H. Li, S. R. Jian, J. C. Huang, T. G. Nieh

Graduate Institute of Materials Science and Engineering

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

4 Scopus citations

Abstract

The thermoplastic deformation behavior of the Mg₅₈Cu _28.5Gd₁₁Ag_2.5 metallic glass composites (BMGCs) reinforced with porous Mo particles was studied by means of thermal scanning calorimetry (DSC), thermal mechanical analysis (TMA) and high-temperature compression test in the supercooled liquid region. Based on the result obtained from DSC and TMA, the deformation behavior for Mg₅₈Cu _28.5Gd₁₁Ag_2.5 BMGC rod was investigated by compression test at different strain rates (1 × 10^-2-1 × 10^-1 s^-1) and temperatures in the supercooled liquid region, namely 433 K, 438 K, and 443 K. The flow stresses obtained at a constant strain rate of 1 × 10^-2 s^-1 decrease with increasing temperature and reach a low stress about 10 MPa at 443 K. In addition, the X-ray diffraction results confirm that the Mg₅₈Cu _28.5Gd₁₁Ag_2.5 BMGC samples remain the amorphous nature after compression at 443 K. The current results indicate that the Mg₅₈Cu_28.5Gd₁₁Ag_2.5 BMGC possesses an excellent superplastic formability with the m-value (strain rate sensitivity) greater than 0.7 in the supercooled liquid region of 438-443 K at a strain rate around 1 × 10^-2 s^-1.

Original language	English
Pages (from-to)	1964-1968
Number of pages	5
Journal	Intermetallics
Volume	18
Issue number	10
DOIs	https://doi.org/10.1016/j.intermet.2010.01.022
State	Published - Oct 2010

Keywords

A. Composites
B. Glasses, metallic
B. Superplastic behavior
C. Plastic forming, hot
F. Electron microscopy, transmission

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10.1016/j.intermet.2010.01.022

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@article{9d98ad97404646dd9ea8ef1dee6374f4,

title = "Thermoplastic forming ability of a Mg-base bulk metallic glass composites reinforced with porous Mo particles",

abstract = "The thermoplastic deformation behavior of the Mg58Cu 28.5Gd11Ag2.5 metallic glass composites (BMGCs) reinforced with porous Mo particles was studied by means of thermal scanning calorimetry (DSC), thermal mechanical analysis (TMA) and high-temperature compression test in the supercooled liquid region. Based on the result obtained from DSC and TMA, the deformation behavior for Mg58Cu 28.5Gd11Ag2.5 BMGC rod was investigated by compression test at different strain rates (1 × 10-2-1 × 10-1 s-1) and temperatures in the supercooled liquid region, namely 433 K, 438 K, and 443 K. The flow stresses obtained at a constant strain rate of 1 × 10-2 s-1 decrease with increasing temperature and reach a low stress about 10 MPa at 443 K. In addition, the X-ray diffraction results confirm that the Mg58Cu 28.5Gd11Ag2.5 BMGC samples remain the amorphous nature after compression at 443 K. The current results indicate that the Mg58Cu28.5Gd11Ag2.5 BMGC possesses an excellent superplastic formability with the m-value (strain rate sensitivity) greater than 0.7 in the supercooled liquid region of 438-443 K at a strain rate around 1 × 10-2 s-1.",

keywords = "A. Composites, B. Glasses, metallic, B. Superplastic behavior, C. Plastic forming, hot, F. Electron microscopy, transmission",

author = "Jang, {J. S.C.} and Li, {W. J.} and Li, {T. H.} and Jian, {S. R.} and Huang, {J. C.} and Nieh, {T. G.}",

note = "Funding Information: The authors would like to gratefully acknowledge the sponsorship from the National Science Council of ROC under the project NSC95-2221-E-214-015-MY3, NSC98-2221-E-008-116-MY3, and NSC96-2218-E-110-001. In addition, the authors are also very grateful for the assistance of TEM by the Micro and Nano Laboratory, Department of Materials Science and Engineering, I-Shou University.",

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doi = "10.1016/j.intermet.2010.01.022",

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volume = "18",

pages = "1964--1968",

journal = "Intermetallics",

issn = "0966-9795",

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TY - JOUR

T1 - Thermoplastic forming ability of a Mg-base bulk metallic glass composites reinforced with porous Mo particles

AU - Jang, J. S.C.

AU - Li, W. J.

AU - Li, T. H.

AU - Jian, S. R.

AU - Huang, J. C.

AU - Nieh, T. G.

N1 - Funding Information: The authors would like to gratefully acknowledge the sponsorship from the National Science Council of ROC under the project NSC95-2221-E-214-015-MY3, NSC98-2221-E-008-116-MY3, and NSC96-2218-E-110-001. In addition, the authors are also very grateful for the assistance of TEM by the Micro and Nano Laboratory, Department of Materials Science and Engineering, I-Shou University.

PY - 2010/10

Y1 - 2010/10

N2 - The thermoplastic deformation behavior of the Mg58Cu 28.5Gd11Ag2.5 metallic glass composites (BMGCs) reinforced with porous Mo particles was studied by means of thermal scanning calorimetry (DSC), thermal mechanical analysis (TMA) and high-temperature compression test in the supercooled liquid region. Based on the result obtained from DSC and TMA, the deformation behavior for Mg58Cu 28.5Gd11Ag2.5 BMGC rod was investigated by compression test at different strain rates (1 × 10-2-1 × 10-1 s-1) and temperatures in the supercooled liquid region, namely 433 K, 438 K, and 443 K. The flow stresses obtained at a constant strain rate of 1 × 10-2 s-1 decrease with increasing temperature and reach a low stress about 10 MPa at 443 K. In addition, the X-ray diffraction results confirm that the Mg58Cu 28.5Gd11Ag2.5 BMGC samples remain the amorphous nature after compression at 443 K. The current results indicate that the Mg58Cu28.5Gd11Ag2.5 BMGC possesses an excellent superplastic formability with the m-value (strain rate sensitivity) greater than 0.7 in the supercooled liquid region of 438-443 K at a strain rate around 1 × 10-2 s-1.

AB - The thermoplastic deformation behavior of the Mg58Cu 28.5Gd11Ag2.5 metallic glass composites (BMGCs) reinforced with porous Mo particles was studied by means of thermal scanning calorimetry (DSC), thermal mechanical analysis (TMA) and high-temperature compression test in the supercooled liquid region. Based on the result obtained from DSC and TMA, the deformation behavior for Mg58Cu 28.5Gd11Ag2.5 BMGC rod was investigated by compression test at different strain rates (1 × 10-2-1 × 10-1 s-1) and temperatures in the supercooled liquid region, namely 433 K, 438 K, and 443 K. The flow stresses obtained at a constant strain rate of 1 × 10-2 s-1 decrease with increasing temperature and reach a low stress about 10 MPa at 443 K. In addition, the X-ray diffraction results confirm that the Mg58Cu 28.5Gd11Ag2.5 BMGC samples remain the amorphous nature after compression at 443 K. The current results indicate that the Mg58Cu28.5Gd11Ag2.5 BMGC possesses an excellent superplastic formability with the m-value (strain rate sensitivity) greater than 0.7 in the supercooled liquid region of 438-443 K at a strain rate around 1 × 10-2 s-1.

KW - A. Composites

KW - B. Glasses, metallic

KW - B. Superplastic behavior

KW - C. Plastic forming, hot

KW - F. Electron microscopy, transmission

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U2 - 10.1016/j.intermet.2010.01.022

DO - 10.1016/j.intermet.2010.01.022

M3 - 期刊論文

AN - SCOPUS:77955560554

SN - 0966-9795

VL - 18

SP - 1964

EP - 1968

JO - Intermetallics

JF - Intermetallics

IS - 10

ER -

Thermoplastic forming ability of a Mg-base bulk metallic glass composites reinforced with porous Mo particles

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