Effect of Melting and Casting Process on Size and Distribution of Insoluble Phase in Aluminum Alloy 2618
ZHU Zhenyu1,2, TU Hao1,2, WU Changjun1,2, PENG Haoping1,2, WANG Jianhua1,2, SU Xuping1,2
1 Jiangsu Key Laboratory of Surface Science and Technology, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China 2 Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering, Changzhou University, Changzhou 213164, China
Abstract: In order to refine the undissolved phases in aluminum alloy 2618 and improve their distribution state, the effect of melt holding time and double liquid mixing process as well as mold temperature on the size and distribution of insoluble phases was investigated by means of optical microscope, scanning electron microscope and X-ray diffractometer. The results show that the proper increase of holding time not only changes the morphology of Al9FeNi from coarse needle to fine needle, but also increases the uniformity of Al9FeNi phase and Al7Cu2Fe phase. The double liquid mixing process could make the morphology of Al9FeNi phase in alloy 2618 changed into fine needle-like. Besides, Al9FeNi and Al7Cu2Fe phases are distributed very uniformly in the matrix of alloy 2618. After the melt of aluminum alloy 2618 is poured into metal mold at room temperature, the fine and uniform distribution of insoluble phases in alloy 2618 could be obtained due to rapid solidification. As the increase of the mold temperature, the size of the insoluble phases in the alloy increases and the aggregation occurs.
朱振宇, 涂浩, 吴长军, 彭浩平, 王建华, 苏旭平. 熔铸工艺对2618铝合金中难溶相尺寸与分布的影响[J]. 材料导报, 2021, 35(4): 4129-4133.
ZHU Zhenyu, TU Hao, WU Changjun, PENG Haoping, WANG Jianhua, SU Xuping. Effect of Melting and Casting Process on Size and Distribution of Insoluble Phase in Aluminum Alloy 2618. Materials Reports, 2021, 35(4): 4129-4133.
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2021, Vol. 35 
