【摘要】：通過合金制備、組織觀察和拉伸實(shí)驗(yàn),研究了Y和Sm對鎂合金AZ81組織和力學(xué)性能的影響。結(jié)果表明,適量的Y和Sm加入鎂合金AZ81后可生成高熔點(diǎn)的Al2Y和Al2Sm相,從而細(xì)化晶粒,改善組織。在室溫和150℃下,合金的抗拉強(qiáng)度和伸長率均隨著Y和Sm總含量的增加先升高后降低,其中,Y和Sm總含量為1.8%(質(zhì)量分?jǐn)?shù))時(shí),合金的力學(xué)性能最好。
[Abstract]:The effects of Y and Sm on the microstructure and mechanical properties of magnesium alloy AZ81 were studied by preparation, microstructure observation and tensile test. The results show that the high melting point Al2Y and Al2Sm phases can be formed by adding proper amount of Y and Sm to magnesium alloy AZ81, which can refine the grains and improve the microstructure. At room temperature and 150 鈩，

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