Mechanism of grain refinement of Mg-Al alloys by SiC inoculation

Yuanding Huang; Karl Ulrich Kainer; Norbert Hort

doi:10.1016/j.scriptamat.2011.01.005

Mechanism of grain refinement of Mg-Al alloys by SiC inoculation

Yuanding Huang^*
, Karl Ulrich Kainer
, Norbert Hort

^*Corresponding author for this work

Helmholtz Centre Hereon

Research output: Journal contributions › Journal articles › Research › peer-review

88 Citations (Scopus)

Abstract

The mechanism of grain refinement was investigated for Mg-Al alloys inoculated with SiC particles. Contrary to the previously reported Al ₄C₃ hypothesis, the ternary carbide Al₂MgC ₂ was observed, which has a crystal structure closer to that of Mg than to that of Al₄C₃. In the centre of the grains, one or more "hillocks" enriched in Al and C were observed. Based on the observed phenomena, a novel mechanism is suggested to explain the grain refinement of Mg-Al alloys with the addition of SiC particles.

Original language	English
Journal	Scripta Materialia
Volume	64
Issue number	8
Pages (from-to)	793-796
Number of pages	4
ISSN	1359-6462
DOIs	https://doi.org/10.1016/j.scriptamat.2011.01.005
Publication status	Published - 04.2011
Externally published	Yes

Research areas and keywords

AlMgC
Carbon inoculation
Grain refining
Magnesium alloys
Solidification
Engineering

ASJC Scopus Subject Areas

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

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10.1016/j.scriptamat.2011.01.005

Cite this

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title = "Mechanism of grain refinement of Mg-Al alloys by SiC inoculation",

abstract = "The mechanism of grain refinement was investigated for Mg-Al alloys inoculated with SiC particles. Contrary to the previously reported Al 4C3 hypothesis, the ternary carbide Al2MgC 2 was observed, which has a crystal structure closer to that of Mg than to that of Al4C3. In the centre of the grains, one or more {"}hillocks{"} enriched in Al and C were observed. Based on the observed phenomena, a novel mechanism is suggested to explain the grain refinement of Mg-Al alloys with the addition of SiC particles.",

keywords = "AlMgC, Carbon inoculation, Grain refining, Magnesium alloys, Solidification, Engineering",

author = "Yuanding Huang and Kainer, \{Karl Ulrich\} and Norbert Hort",

year = "2011",

month = apr,

doi = "10.1016/j.scriptamat.2011.01.005",

language = "English",

volume = "64",

pages = "793--796",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Acta Materialia Inc",

number = "8",

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TY - JOUR

T1 - Mechanism of grain refinement of Mg-Al alloys by SiC inoculation

AU - Huang, Yuanding

AU - Kainer, Karl Ulrich

AU - Hort, Norbert

PY - 2011/4

Y1 - 2011/4

N2 - The mechanism of grain refinement was investigated for Mg-Al alloys inoculated with SiC particles. Contrary to the previously reported Al 4C3 hypothesis, the ternary carbide Al2MgC 2 was observed, which has a crystal structure closer to that of Mg than to that of Al4C3. In the centre of the grains, one or more "hillocks" enriched in Al and C were observed. Based on the observed phenomena, a novel mechanism is suggested to explain the grain refinement of Mg-Al alloys with the addition of SiC particles.

AB - The mechanism of grain refinement was investigated for Mg-Al alloys inoculated with SiC particles. Contrary to the previously reported Al 4C3 hypothesis, the ternary carbide Al2MgC 2 was observed, which has a crystal structure closer to that of Mg than to that of Al4C3. In the centre of the grains, one or more "hillocks" enriched in Al and C were observed. Based on the observed phenomena, a novel mechanism is suggested to explain the grain refinement of Mg-Al alloys with the addition of SiC particles.

KW - AlMgC

KW - Carbon inoculation

KW - Grain refining

KW - Magnesium alloys

KW - Solidification

KW - Engineering

UR - https://www.scopus.com/pages/publications/79951518214

U2 - 10.1016/j.scriptamat.2011.01.005

DO - 10.1016/j.scriptamat.2011.01.005

M3 - Journal articles

AN - SCOPUS:79951518214

SN - 1359-6462

VL - 64

SP - 793

EP - 796

JO - Scripta Materialia

JF - Scripta Materialia

IS - 8

ER -

Mechanism of grain refinement of Mg-Al alloys by SiC inoculation

Abstract

Research areas and keywords

ASJC Scopus Subject Areas

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