Microstructure of high pressure die cast AZ91D modified with Ca and Ce

L. Shepeleva; M. Bamberger

doi:10.1016/j.msea.2006.03.091

Microstructure of high pressure die cast AZ91D modified with Ca and Ce

L. Shepeleva
, M. Bamberger

Materials Science & Engineering

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

Abstract

High pressure die cast (HPDC) AZ91D (Mg-8.8 wt%Al-0.74 wt%Zn-0.29 wt%Mn) modified with Ca and Ce was investigated. Thermodynamic calculations of liquid/solid equilibrium were confirmed by DTA measurements and solid/liquid equilibrium at various temperatures between the liquidus and solidus temperatures. The solidification path of HPDC AZ91 and AZ91 modified with Ca and Ce was calculated using the Termo-Calc program. The microstructure was investigated utilizing optical and electron (SEM) microscopy. The phases Mg₁₇Al₁₂, αMg, Al₈Mn₅, Al₂Ca, and Al₄CeMg₄ were found. Their volume fractions and the composition of the residual melt as functions of the temperature were determined. The microstructure, the distribution of the alloying elements in the matrix, and the precipitation during exposure to elevated temperatures as well as their effect on creep properties are discussed.

Original language	English
Pages (from-to)	312-317
Number of pages	6
Journal	Materials Science and Engineering: A
Volume	425
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2006.03.091
State	Published - 15 Jun 2006

Keywords

AZ91D
Ca and Ce modification
Microstructure

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2006.03.091

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title = "Microstructure of high pressure die cast AZ91D modified with Ca and Ce",

abstract = "High pressure die cast (HPDC) AZ91D (Mg-8.8 wt\%Al-0.74 wt\%Zn-0.29 wt\%Mn) modified with Ca and Ce was investigated. Thermodynamic calculations of liquid/solid equilibrium were confirmed by DTA measurements and solid/liquid equilibrium at various temperatures between the liquidus and solidus temperatures. The solidification path of HPDC AZ91 and AZ91 modified with Ca and Ce was calculated using the Termo-Calc program. The microstructure was investigated utilizing optical and electron (SEM) microscopy. The phases Mg17Al12, αMg, Al8Mn5, Al2Ca, and Al4CeMg4 were found. Their volume fractions and the composition of the residual melt as functions of the temperature were determined. The microstructure, the distribution of the alloying elements in the matrix, and the precipitation during exposure to elevated temperatures as well as their effect on creep properties are discussed.",

keywords = "AZ91D, Ca and Ce modification, Microstructure",

author = "L. Shepeleva and M. Bamberger",

year = "2006",

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doi = "10.1016/j.msea.2006.03.091",

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TY - JOUR

T1 - Microstructure of high pressure die cast AZ91D modified with Ca and Ce

AU - Shepeleva, L.

AU - Bamberger, M.

PY - 2006/6/15

Y1 - 2006/6/15

N2 - High pressure die cast (HPDC) AZ91D (Mg-8.8 wt%Al-0.74 wt%Zn-0.29 wt%Mn) modified with Ca and Ce was investigated. Thermodynamic calculations of liquid/solid equilibrium were confirmed by DTA measurements and solid/liquid equilibrium at various temperatures between the liquidus and solidus temperatures. The solidification path of HPDC AZ91 and AZ91 modified with Ca and Ce was calculated using the Termo-Calc program. The microstructure was investigated utilizing optical and electron (SEM) microscopy. The phases Mg17Al12, αMg, Al8Mn5, Al2Ca, and Al4CeMg4 were found. Their volume fractions and the composition of the residual melt as functions of the temperature were determined. The microstructure, the distribution of the alloying elements in the matrix, and the precipitation during exposure to elevated temperatures as well as their effect on creep properties are discussed.

AB - High pressure die cast (HPDC) AZ91D (Mg-8.8 wt%Al-0.74 wt%Zn-0.29 wt%Mn) modified with Ca and Ce was investigated. Thermodynamic calculations of liquid/solid equilibrium were confirmed by DTA measurements and solid/liquid equilibrium at various temperatures between the liquidus and solidus temperatures. The solidification path of HPDC AZ91 and AZ91 modified with Ca and Ce was calculated using the Termo-Calc program. The microstructure was investigated utilizing optical and electron (SEM) microscopy. The phases Mg17Al12, αMg, Al8Mn5, Al2Ca, and Al4CeMg4 were found. Their volume fractions and the composition of the residual melt as functions of the temperature were determined. The microstructure, the distribution of the alloying elements in the matrix, and the precipitation during exposure to elevated temperatures as well as their effect on creep properties are discussed.

KW - AZ91D

KW - Ca and Ce modification

KW - Microstructure

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U2 - 10.1016/j.msea.2006.03.091

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AN - SCOPUS:33744551951

SN - 0921-5093

VL - 425

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JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 1-2

ER -

Microstructure of high pressure die cast AZ91D modified with Ca and Ce

Abstract

Keywords

ASJC Scopus subject areas

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