STUDY ON THE QUASICRYTAL PHASE IN Mg74Zn25Y1 ALLOY

Abstract

Abstract: The formation and distribution of quasicrystal in as-cast Mg74Zn25Y1 alloy are investigated. On this base, the feasibility to prepare quasicrystal reinforced low-density magnesium alloy is also discussed. The microstructure of the as-cast Mg74Zn25Y1 alloy is analyzed by optical microscope and SEM, composition and phases are checked by EDS, the constituent phases are identified by XRD and quasicrystal structure is identified by TEM. Analyzing results show that the microstructures of the alloy consist of a-Mg, MgZn and Zn60Mg30Y10. Five-fold icosahedral quasicrytal Zn60Mg30Y10, which appears in five petal shape or in small pentagonal grains, is uniformly dispersed on the matrix with less than 50 mm grain size.

Key words: Magnesium alloy, Quasicrytal, Solidification

CLC Number:

TG146

Shi Fei;Guo Xuefeng;Zhang Zhongming. STUDY ON THE QUASICRYTAL PHASE IN Mg74Zn25Y1 ALLOY[J]. , 2003, 39(8): 138-140.

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STUDY ON THE QUASICRYTAL PHASE IN Mg74Zn25Y1 ALLOY

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