Thixomolding 공정으로 제조된 Mg-xAl-yZn계 마그네슘 합금의 미세조직과 기계적 물성에 미치는 Ti 첨가 영향

박성현; 장호승; 이지호; 박노진; 오명훈

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자료유형: 학술저널

저자정보: 박성현 (금오공과대학교 신소재공학부) 장호승 (금오공과대학교 신소재공학부) 이지호 (금오공과대학교 신소재공학부) 박노진 (금오공과대학교 신소재공학부) 오명훈 (금오공과대학교 신소재공학부)

저널정보: 한국열처리공학회 열처리공학회지 열처리공학회지 제32권 제4호

발행연도: 2019.1

수록면: 168 - 174 (7page)

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The microstructural features and relative room temperature mechanical properties were investigated in various compositions of Mg-xAl-yZn alloys by thxiomolding process. The microstructure was composed of ${\alpha}$-Mg particles and mixture of ${\alpha}$-Mg and ${\beta}-Mg_{17}Al_{12}$ eutectic phase. The amount of ${\beta}-Mg_{17}Al_{12}$ eutectic phase in mixture was increased with increasing Al and Zn contents without grain refinement. After adding Ti content, however, the morphology of ${\beta}-Mg_{17}Al_{12}$ eutectic phase transformed from net-like to discontinuous shape and the average grain size reduced. To determine the relationship between microstructural features and their mechanical properties, a tensile test was performed at room temperature. As a result, it was found that the mechanical properties were improved in all of Ti contained alloys due to increased elongation and the mechanisms are discussed in terms of microstructural evolution.

#Thixomolding process #Mg alloys #Microstructure #${beta}-Mg_{17}Al_{12}$ phase #Mechanical properties

참고문헌 (13)

참고문헌 신청

K. U. Kainer / 2006 / International Conference on Magnesium Alloys and Their Application, 7th, WILEY-VCH :985

F. Czerwinski / 2001 / Acta mater. 49:1225~1235

G. Petterson / 1996 / Mater. Sci. Eng. A 207:115~120

Thaddeus B. Massalski / 1986 / Binary Alloy Phase Diagrams / ASM :170

Y. C. Lee / 2000 / Metall. Mater. Trans. A 31:2895~2906

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