CAJ | 학술논문

采用XRD和SEM等微观表征技术研究不同Zn添加量对Mg?2Er合金微观组织和力学性能的影响。结果表明：当Zn添加量为1%和2%时，合金主要相组成为W相和α-Mg；当Zn添加量为4%~10%时，合金中则有I相析出，合金相成分变为W相、I相和α-Mg；当Zn添加量增加至12%时，W相消失，合金中主要第二相则为I相和Mg4Zn7相。当Zn添加量为6%时，合金具有较好的拉伸力学性能，其抗拉强度、屈服强度和伸长率分别为224 MPa、134 MPa和10.4%。
채용XRD화SEM등미관표정기술연구불동Zn첨가량대Mg?2Er합금미관조직화역학성능적영향。결과표명：당Zn첨가량위1%화2%시，합금주요상조성위W상화α-Mg；당Zn첨가량위4%~10%시，합금중칙유I상석출，합금상성분변위W상、I상화α-Mg；당Zn첨가량증가지12%시，W상소실，합금중주요제이상칙위I상화Mg4Zn7상。당Zn첨가량위6%시，합금구유교호적랍신역학성능，기항랍강도、굴복강도화신장솔분별위224 MPa、134 MPa화10.4%。
The effect of Zn addition on microstructure and mechanical properties of the Mg?2Er alloy was investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that the alloys with 1%and 2%Zn (mass fraction) are composed of the W-phase and theα-Mg matrix. Meanwhile, the addition of 4%?10%Zn results in the formation of the I-phase, the W-phase and theα-Mg matrix. When the addition of Zn reaches 12%, the W-phase disappears and the phase constituents of the alloys mainly include the I-phase and the Mg4Zn7 phase besides theα-Mg solid solution. The alloy containing 6%Zn has better mechanical properties, of which the ultimate tensile strength (UTS) and the yield tensile strength (YTS) are about 224 MPa and 134 MPa, respectively, companying an elongation of 10.4%.