摘要
研究了稀土Y对金属间化合物Mg17Al12显微组织和力学性能的影响。结果表明,Y能细化Mg17Al12的显微组织,导致形状不规则的Al2Y新相和连珠状的共晶组织α-Mg+β-Mg17Al12的出现。适量的Y能提高室温下合金的抗腐蚀性能和力学性能,添加量为2.0%时(质量分数)性能最佳,过量添加使性能有所降低。
The effects of yttrium with different content on the microstructures and mechanical proper- ties of intermetallic compound Mg17Al12 were investigated by using scanning electron microscope（SEM）, X- ray diffractometer（XRD）, electronic universal testing machines and electrochemical method.The results show that proper content of Y can refine the microstructures of intermetallic compound MglTAI12, and a new irregular phase AI2Y and a renju shaped phase eutectic structure α-Mg＋β＋Mg17Al12 form. The proper content of Y can improve the intermetallic compound Mg17Al12 s corrosion resistance and mechanical properties at room temperature. The alloy has the best properties when the content of the Y is 2.0%, however excessive Y decreases the combination properties of the intermetallic compound.
出处
《材料研究学报》
EI
CAS
CSCD
北大核心
2013年第3期326-330,共5页
Chinese Journal of Materials Research
基金
国家自然科学基金51001079和21201129
高等学校博士点专项科研基金20091402110010
中国博士后科学基金20100471586
山西省高等学校青年学术带头人支持计划
山西省自然科学基金2011011020-2和2010021023-1资助项目~~
