CAJ | 학술논문

研究了Y含量(质量分数分别为0、0.93%、2.25%、3.50%)对Mg-0.8Zm-0.35Zr合金组织和力学性能的影响.结果表明,在Mg-008Zn-0.35Zr合金中添加Y,能够有效的细化晶粒,而且随着Y含量的增加,晶界上的第二相和晶粒内部的层片状组织增多;合金的室温和高温抗拉强度提高,合金的室温伸长率呈现先增后降的趋势(Y含量为0.93%时达到峰值26.0%),合金的高温伸长率降低;合金的高温抗蠕变性能得到了明显的提高.
연구료Y함량(질량분수분별위0、0.93%、2.25%、3.50%)대Mg-0.8Zm-0.35Zr합금조직화역학성능적영향.결과표명,재Mg-008Zn-0.35Zr합금중첨가Y,능구유효적세화정립,이차수착Y함량적증가,정계상적제이상화정립내부적층편상조직증다;합금적실온화고온항랍강도제고,합금적실온신장솔정현선증후강적추세(Y함량위0.93%시체도봉치26.0%),합금적고온신장솔강저;합금적고온항연변성능득도료명현적제고.
Effects of different Y contents, including 0, 0. 93%, 2. 25% and 3. 50%, on microstructure and mechanical properties of Mg-0. 8Zn-0. 35Zr alloy were investigated. The results reveal that grain size in the alloy can be refined with Y addition, furthermore, with increasing in Y content, the secondary phase on the grain boundary and lamellar structure in grain are increased. In addition, with Y content increase, the ambient and elevated tensile strength of the alloy are improved, and the ambient elongation exhibits the phenomena of first increase and then decrease, where it reaches 26% with 0. 93% Y content, however, the elevated elongation is decreased, alternatively, elevat-ed creep resistance of the alloy is obviously improved.