Modification of Mg2Si morphology in squeeze cast Mg-Al-Zn-Si alloys by Ca or P addition

Jae Joong Kim; Do Hyang Kim; K. S. Shin; Nack J. Kim

doi:10.1016/S1359-6462(99)00172-4

Modification of Mg₂Si morphology in squeeze cast Mg-Al-Zn-Si alloys by Ca or P addition

Jae Joong Kim, Do Hyang Kim, K. S. Shin, Nack J. Kim

Department of Materials Science and Engineering

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

216 Citations (Scopus)

Abstract

The mechanical properties of Mg₂Si containing Mg alloys through the modification of the morphology of Mg₂Si particles by Ca or P addition are improved. It shows that the microstructure of squeeze cast Mg-5Al-1Zn-0.7Si alloy contains Chinese script Mg₂Si particles. Chinese script type Mg₂Si particles acts as crack nucleation sites, resulting in poor mechanical properties in squeeze cast Mg-5Al-1Zn-0.7Si alloy. Addition of Ca or P promotes the formation of fine polygonal type Mg₂Si particles by providing the nucleation sites for polygonal type Mg₂Si particles. Moreover, the grain size of Ca or P modified Mg-Al-Zn-Si alloys are much finer than that of base alloy.

Original language	English
Pages (from-to)	333-340
Number of pages	8
Journal	Scripta Materialia
Volume	41
Issue number	3
DOIs	https://doi.org/10.1016/S1359-6462(99)00172-4
Publication status	Published - 1999 Jul 9

Bibliographical note

Funding Information:
The authors appreciate the financial support of the Hyundai Motors Company and the Korea Ministry of Science and Technology.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/S1359-6462(99)00172-4

Cite this

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title = "Modification of Mg2Si morphology in squeeze cast Mg-Al-Zn-Si alloys by Ca or P addition",

abstract = "The mechanical properties of Mg2Si containing Mg alloys through the modification of the morphology of Mg2Si particles by Ca or P addition are improved. It shows that the microstructure of squeeze cast Mg-5Al-1Zn-0.7Si alloy contains Chinese script Mg2Si particles. Chinese script type Mg2Si particles acts as crack nucleation sites, resulting in poor mechanical properties in squeeze cast Mg-5Al-1Zn-0.7Si alloy. Addition of Ca or P promotes the formation of fine polygonal type Mg2Si particles by providing the nucleation sites for polygonal type Mg2Si particles. Moreover, the grain size of Ca or P modified Mg-Al-Zn-Si alloys are much finer than that of base alloy.",

author = "Kim, {Jae Joong} and Kim, {Do Hyang} and Shin, {K. S.} and Kim, {Nack J.}",

note = "Funding Information: The authors appreciate the financial support of the Hyundai Motors Company and the Korea Ministry of Science and Technology.",

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AU - Kim, Jae Joong

AU - Kim, Do Hyang

AU - Shin, K. S.

AU - Kim, Nack J.

N1 - Funding Information: The authors appreciate the financial support of the Hyundai Motors Company and the Korea Ministry of Science and Technology.

PY - 1999/7/9

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AB - The mechanical properties of Mg2Si containing Mg alloys through the modification of the morphology of Mg2Si particles by Ca or P addition are improved. It shows that the microstructure of squeeze cast Mg-5Al-1Zn-0.7Si alloy contains Chinese script Mg2Si particles. Chinese script type Mg2Si particles acts as crack nucleation sites, resulting in poor mechanical properties in squeeze cast Mg-5Al-1Zn-0.7Si alloy. Addition of Ca or P promotes the formation of fine polygonal type Mg2Si particles by providing the nucleation sites for polygonal type Mg2Si particles. Moreover, the grain size of Ca or P modified Mg-Al-Zn-Si alloys are much finer than that of base alloy.

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