不同变质剂对4032铝合金变质效果的影响-中南大学学报.pdf

42 2 () Vol.42 No.2 2011 2 Journal of Central South University (Science and Technology) Feb. 2011 4032 1 1, 2 1 1 1 1 1 (1. 410083 2. 410083) Sr 4032 Sr Na Sr+ Sr Sr+Na Sr Na P 4032 TG146.2+ 1 A 1672−7207(2011)02−0361−07 Effects of different modifiers on modification efficiency of 4032 aluminum alloy 1 1, 2 1 1 ZHAO Yan-kuo , LI Hong-ying , WANG Xiao-feng , LIU Jiao-jiao , 1 1 1 WU Yue , WU Rong-hai , ZHANG Hao-wei (1. Educational Key Laboratory of Non-ferrous Metal Materials Science and Engineering, Central South University, Changsha 410083, China; 2. School of Aeronautics and Astronautics, Central South University, Changsha 410083, China) Abstract: The microstructure and tensile properties of 4032 aluminum alloy after adding different modifiers combined with strontium were studied using optical microscope (OM), scanning electron microscope (SEM), energy spectrum analysis and mechanical property tests. The results indicate that the morphology and property of 4032 aluminum alloy modified by quaternionic sodium salt combined with strontium is optimal. The porosity rate of 4032 aluminum alloy modified by some modifiers combined with strontium is lower than that by the strontium alone, the rate of the alloy modified by sodium salt combined with strontium is the lowest; None of primary silicon