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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/72400

    Title: 錳對Al-13.9wt.%Mg2Si複合材料微結構與磨耗性質之影響;Effect of Mn on the Microstructure and Wear Properties of Al-13.9wt.%Mg2Si Composites
    Authors: 吳昆達;Wu,Kun-Da
    Contributors: 機械工程學系
    Keywords: Al-Mg2Si;複合材料;磨耗性質
    Date: 2016-07-20
    Issue Date: 2016-10-13 14:52:19 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本研究藉由微結構觀察、機械性質的量測,探討錳對Al-13.9wt.%Mg2Si (Al-8.8Mg-5.1Si(wt%))複合材料磨耗性質之影響,結果顯示,鑄態未含錳材料中,主要可觀察到初晶α-Al、初晶Mg2Si顆粒與層狀共晶Mg2Si;而在鑄態含錳材料中,可觀察到初晶Mg2Si顆粒與纖維狀共晶Mg2Si。兩者材料經均質化處理後,共晶Mg2Si均有球化現象。
    ;With microstructure observation and mechanical test,explore the effect of manganese on wear properties of Al-13.9wt.% Mg2Si (Al-8.8Mg-5.1Si (wt%)) composites. The result indicated that unmodified cast material mainly observed primary α-Al , primary Mg2Si particles and lamellar eutectic Mg2Si.However the cast material with manganese observed finer aluminum grain, primary Mg2Si particles and fibrous eutectic Mg2Si.After homogenization treatment, the eutectic Mg2Si are both transformed into fine spherical shape.

    Addition of manganese in Al-13.9wt.% Mg2Si composites not only enhance the hardness and tensile strength of the cast material,but also reduce the wear surface degree of delamination.After homogenization treatment, whether or not with manganese, it didn’t affect the hardness,but significantly enhance the ductility of both materials. The tensile fracture surface are observed little dimple. The wear surface are both rendered wave pattern and the wave pattern of the manganese-containing material is relatively dense,it shows a high abrasion impedance of manganese material.
    Appears in Collections:[機械工程研究所] 博碩士論文

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