Effect of high pressure solidification on tensile properties and strengthening mechanisms of Al-20Si

P. Ma; Z. J. Wei; Y. D. Jia; C. M. Zou; S. Scudino; K. G. Prashanth; Z. S. Yu; S. L. Yang; C. G. Li; J. Eckert

doi:10.1016/j.jallcom.2016.07.016

Effect of high pressure solidification on tensile properties and strengthening mechanisms of Al-20Si

P. Ma^*
, Z. J. Wei
, Y. D. Jia
, C. M. Zou
, S. Scudino
, K. G. Prashanth
, Z. S. Yu
, S. L. Yang
, C. G. Li
, J. Eckert

^*Corresponding author for this work

Shanghai University of Engineering Science
Leibniz Institute for Solid State and Materials Research Dresden
Harbin Institute of Technology
Shanghai University
Austrian Academy of Sciences
University of Leoben

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

40 Scopus citations

Abstract

Al-20Si alloy specimens were manufactured using high pressure solidification. The microstructure, the mechanical properties as well as the strengthening mechanisms of the alloy were investigated. The results show that the primary Si phase disappears, the supersaturated α-Al prevails, and the eutectic Si phase is well refined after high pressure solidification. The ultimate tensile strength (UTS), the yield strength (YS) and the elongation increase gradually with increasing solidification pressure and the values of the Al-20Si alloy solidified at 3 GPa are 365 MPa, 237 MPa and 2.98%, respectively, corresponding to an increase of 83%, 57%, and 412% compared with the alloy solidified at atmospheric pressure. The alloy solidified at atmospheric pressure shows typical cleavage fracture, whereas the alloy solidified at 3 GPa exhibits quasi-cleavage fracture. Solid solution strengthening is the dominating strengthening mechanism after high pressure solidification.

Original language	English
Pages (from-to)	88-93
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	688
DOIs	https://doi.org/10.1016/j.jallcom.2016.07.016
State	Published - 2016
Externally published	Yes

Keywords

Al-20Si alloy
High pressure solidification
Mechanical properties
Strengthening mechanism

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10.1016/j.jallcom.2016.07.016

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@article{5d22a44b404f476699824ff13dc182cb,

title = "Effect of high pressure solidification on tensile properties and strengthening mechanisms of Al-20Si",

abstract = "Al-20Si alloy specimens were manufactured using high pressure solidification. The microstructure, the mechanical properties as well as the strengthening mechanisms of the alloy were investigated. The results show that the primary Si phase disappears, the supersaturated α-Al prevails, and the eutectic Si phase is well refined after high pressure solidification. The ultimate tensile strength (UTS), the yield strength (YS) and the elongation increase gradually with increasing solidification pressure and the values of the Al-20Si alloy solidified at 3 GPa are 365 MPa, 237 MPa and 2.98\%, respectively, corresponding to an increase of 83\%, 57\%, and 412\% compared with the alloy solidified at atmospheric pressure. The alloy solidified at atmospheric pressure shows typical cleavage fracture, whereas the alloy solidified at 3 GPa exhibits quasi-cleavage fracture. Solid solution strengthening is the dominating strengthening mechanism after high pressure solidification.",

keywords = "Al-20Si alloy, High pressure solidification, Mechanical properties, Strengthening mechanism",

author = "P. Ma and Wei, \{Z. J.\} and Jia, \{Y. D.\} and Zou, \{C. M.\} and S. Scudino and Prashanth, \{K. G.\} and Yu, \{Z. S.\} and Yang, \{S. L.\} and Li, \{C. G.\} and J. Eckert",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

doi = "10.1016/j.jallcom.2016.07.016",

language = "英语",

volume = "688",

pages = "88--93",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Effect of high pressure solidification on tensile properties and strengthening mechanisms of Al-20Si

AU - Ma, P.

AU - Wei, Z. J.

AU - Jia, Y. D.

AU - Zou, C. M.

AU - Scudino, S.

AU - Prashanth, K. G.

AU - Yu, Z. S.

AU - Yang, S. L.

AU - Li, C. G.

AU - Eckert, J.

PY - 2016

Y1 - 2016

N2 - Al-20Si alloy specimens were manufactured using high pressure solidification. The microstructure, the mechanical properties as well as the strengthening mechanisms of the alloy were investigated. The results show that the primary Si phase disappears, the supersaturated α-Al prevails, and the eutectic Si phase is well refined after high pressure solidification. The ultimate tensile strength (UTS), the yield strength (YS) and the elongation increase gradually with increasing solidification pressure and the values of the Al-20Si alloy solidified at 3 GPa are 365 MPa, 237 MPa and 2.98%, respectively, corresponding to an increase of 83%, 57%, and 412% compared with the alloy solidified at atmospheric pressure. The alloy solidified at atmospheric pressure shows typical cleavage fracture, whereas the alloy solidified at 3 GPa exhibits quasi-cleavage fracture. Solid solution strengthening is the dominating strengthening mechanism after high pressure solidification.

AB - Al-20Si alloy specimens were manufactured using high pressure solidification. The microstructure, the mechanical properties as well as the strengthening mechanisms of the alloy were investigated. The results show that the primary Si phase disappears, the supersaturated α-Al prevails, and the eutectic Si phase is well refined after high pressure solidification. The ultimate tensile strength (UTS), the yield strength (YS) and the elongation increase gradually with increasing solidification pressure and the values of the Al-20Si alloy solidified at 3 GPa are 365 MPa, 237 MPa and 2.98%, respectively, corresponding to an increase of 83%, 57%, and 412% compared with the alloy solidified at atmospheric pressure. The alloy solidified at atmospheric pressure shows typical cleavage fracture, whereas the alloy solidified at 3 GPa exhibits quasi-cleavage fracture. Solid solution strengthening is the dominating strengthening mechanism after high pressure solidification.

KW - Al-20Si alloy

KW - High pressure solidification

KW - Mechanical properties

KW - Strengthening mechanism

UR - https://www.scopus.com/pages/publications/84978215699

U2 - 10.1016/j.jallcom.2016.07.016

DO - 10.1016/j.jallcom.2016.07.016

M3 - 文章

AN - SCOPUS:84978215699

SN - 0925-8388

VL - 688

SP - 88

EP - 93

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Effect of high pressure solidification on tensile properties and strengthening mechanisms of Al-20Si

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Keywords

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