A356铝合金半固态浆料的双向弱电磁搅拌与等温处理工艺的研究
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摘要
结合弱电磁搅拌和熔体等温保温技术,提出了一种复合浆料制备新工艺:双向弱电磁搅拌+等温保温处理。研究了铝熔体双向弱电磁搅拌后等温温度580～610℃、等温保温时间3～15 min对凝固组织形貌演化规律的影响。结果表明,在不同的等温保温参数作用下,随着温度升高、时间延长,初生相尺寸逐渐细化球化,但等温温度和等温时间存在阈值。超过阈值,初生相反而粗化。经过对比初生相形貌可知,在等温温度600℃、等温时间7 min条件下初生相的尺寸细化和球化程度达到最佳,平均等积圆直径为29.4μm,形状因子0.86。因此,该温度和时间是半固态A356铝合金在复合工艺条件下,匹配合理的熔体等温处理工艺参数。通过该新型复合工艺可制备出品质合格的半固态铝合金浆料。
A new technology combining slightly electromagnetic stirring and melt isothermal holding technology was formed: Two-way slightly electromagnetic stirring and isothermal holding. The effects of the isothermal holding temperature from 580 to 610℃ and the isothermal holding time from 3 to 15 min on the evolution of solidification microstructure were researched. The results indicate that under different isothermal heat treatment parameters, as the temperature increases and time extends, the size of the primary grains is gradually refined and spheroidized. However, the threshold value of the isothermal holding temperature and time could be found, so the grains become coarse above the threshold value. By comparing the microstructure of the grain, it is found that the proper parameters are the isothermal holding temperature of 600℃ and the isothermal holding time of 7 min, when the average equal-area circle diameter and average shape factor of the primary phase are 29.4 μm and 0.86,respectively. Therefore, the temperature and time are the reasonably-matched melt isothermal holding process parameters for the semisolid A356 aluminum alloy in the composite process. The qualified semisolid aluminum alloy slurry could be prepared by the new composite process.
A new technology combining slightly electromagnetic stirring and melt isothermal holding technology was formed: Two-way slightly electromagnetic stirring and isothermal holding. The effects of the isothermal holding temperature from 580 to 610℃ and the isothermal holding time from 3 to 15 min on the evolution of solidification microstructure were researched. The results indicate that under different isothermal heat treatment parameters, as the temperature increases and time extends, the size of the primary grains is gradually refined and spheroidized. However, the threshold value of the isothermal holding temperature and time could be found, so the grains become coarse above the threshold value. By comparing the microstructure of the grain, it is found that the proper parameters are the isothermal holding temperature of 600℃ and the isothermal holding time of 7 min, when the average equal-area circle diameter and average shape factor of the primary phase are 29.4 μm and 0.86,respectively. Therefore, the temperature and time are the reasonably-matched melt isothermal holding process parameters for the semisolid A356 aluminum alloy in the composite process. The qualified semisolid aluminum alloy slurry could be prepared by the new composite process.
引文
[1]Mao W M,Bai Y L,Tang G X.Journal of Materials Processing Technology[J],2006,22(4):447
[2]Gerald T P,Kumar P,Lakshmi H et al.Transactions of Nonferrous Metals Society of China[J],2010,20(S3):774
[3]Zhang Xiaoli(张小立),Xie Shuisheng(谢水生),Li Tingju(李廷举)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2007,36(5):915
[4]Liu Jing(刘静),Wang Ping(王平).Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2012,41(S2):862
[5]Li Wei(李微),Zhao Junwen(赵君文),Luo Qinglai(罗庆来)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2016,45(10):2664
[6]Wang Haijun(王海军),Xu Jun(徐骏),Zhang Zhifeng(张志峰)et al.Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2016,26(4):723
[7]Feng Pengfa(冯鹏发),Tang Jingli(唐靖林),Li Shuangshou(李双寿)et al.Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2007,17(1):14
[8]Zhang Qi(张琦),Cao Miao(曹苗),Cai Jin(蔡进)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2014,43(8):1974
[9]Guo Hongmin(郭洪民),Yang Xiangjie(杨湘杰),Luo Xuequan(罗学泉)et al.Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2009,19(12):2106
[10]Nourouzi S,Baseri H,Kolahdooz A et al.Journal of Mechanical Science and Technology[J],2013,27(12):3869
[11]Gencalp S,Saklakoglu N.Arabian Journal for Science and Engineering[J],2012,37(8):2255
[12]Guan R G,Zhao Z Y,Li Y D et al.Journal of Materials Processing Technology[J],2016,229:514
[13]Yang Xiaorong(杨小容),Mao Weimin(毛卫民),Gao Chong(高冲).Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2009,19(5):869
[14]Sukhram M,Argyropoulos S A.Metallurgical and Materials Transactions B[J],2014,45B:1723
[15]Liu Zheng(刘政),Xu Lina(徐丽娜),Yu Zhaofu(余昭福)et al.Acta Metallurgica Sinica(金属学报)[J],2016,52(6):698
[16]Liu Zheng(刘政),Zhou Xiangyu(周翔宇).Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2015,25(1):49
[17]Liu Zheng(刘政),Zhang Jiayi(张嘉艺),Luo Haolin(罗浩林)et al.Acta Metallurgica Sinica(金属学报)[J],2016,52(2):177
[18]Liu Zheng(刘政),Chen Qingchun(谌庆春),Guo Song(郭颂)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(4):859
[19]Kanga C G,Baeb J W,Kima B M.Journal of Mechanical Science and Technology[J],2007,187-188(12):344
[20]Bai Y L,Xu J,Zhang Z F et al.Transactions of Nonferrous Metals Society of China[J],2009,19(5):1104
[21]Liu Z,Mao W M,Zhao Z D.Transactions of Nonferrous Metals Society of China[J],2006,16(1):71
[22]Dwivedi P S,Sharma S,Mishra R K.Procedia Materials Science[J],2014,6(10):1524
[23]Gao Zhongtang(高中堂),Hu Rui(胡锐),Wang Jun(王军)et al.Acta Metallurgica Sinica(金属学报)[J],2014,50(12):1471
[24]Liu Dongmin(刘东明),Zhao Jiuzhou(赵九洲),Ye Hengqiang(叶恒强).Acta Metallurgica Sinica(金属学报)[J],2003,39(4):375
[25]Liu Zheng(刘政),Zhang Jiayi(张嘉艺),Yu Zhaofu(余昭福).Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2015,25(11):3026
[26]Wang Shunchneg(王顺成),Wen Jinglin(温景林),Zhou Tianguo(周天国)et al.Journal of Materials Science and Engineering(材料科学与工程)[J],2005,23(1):15
[27]Hu Gengxiang(胡赓祥),Cai Xun(蔡珣),long Yonghua(戎咏华).Foundations of Materials Science(材料科学基础)[M].Shanghai:Shanghai Jiaotong University Press,2000:150
[28]Gao Yimin(高义民).Metal Solidification Principle(金属凝固原理)[M].Xi’an:Xi’an Jiao tong University Press,2010:30
[29]Zhu G L,Xu J,Zhang Z F et al.Transactions of Nonferrous Metals Society of China[J],2010,20(S2):868
[30]Philippe T,Voorhees P W.Acta Material[J],2013,61(11):4237
[2]Gerald T P,Kumar P,Lakshmi H et al.Transactions of Nonferrous Metals Society of China[J],2010,20(S3):774
[3]Zhang Xiaoli(张小立),Xie Shuisheng(谢水生),Li Tingju(李廷举)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2007,36(5):915
[4]Liu Jing(刘静),Wang Ping(王平).Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2012,41(S2):862
[5]Li Wei(李微),Zhao Junwen(赵君文),Luo Qinglai(罗庆来)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2016,45(10):2664
[6]Wang Haijun(王海军),Xu Jun(徐骏),Zhang Zhifeng(张志峰)et al.Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2016,26(4):723
[7]Feng Pengfa(冯鹏发),Tang Jingli(唐靖林),Li Shuangshou(李双寿)et al.Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2007,17(1):14
[8]Zhang Qi(张琦),Cao Miao(曹苗),Cai Jin(蔡进)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2014,43(8):1974
[9]Guo Hongmin(郭洪民),Yang Xiangjie(杨湘杰),Luo Xuequan(罗学泉)et al.Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2009,19(12):2106
[10]Nourouzi S,Baseri H,Kolahdooz A et al.Journal of Mechanical Science and Technology[J],2013,27(12):3869
[11]Gencalp S,Saklakoglu N.Arabian Journal for Science and Engineering[J],2012,37(8):2255
[12]Guan R G,Zhao Z Y,Li Y D et al.Journal of Materials Processing Technology[J],2016,229:514
[13]Yang Xiaorong(杨小容),Mao Weimin(毛卫民),Gao Chong(高冲).Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2009,19(5):869
[14]Sukhram M,Argyropoulos S A.Metallurgical and Materials Transactions B[J],2014,45B:1723
[15]Liu Zheng(刘政),Xu Lina(徐丽娜),Yu Zhaofu(余昭福)et al.Acta Metallurgica Sinica(金属学报)[J],2016,52(6):698
[16]Liu Zheng(刘政),Zhou Xiangyu(周翔宇).Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2015,25(1):49
[17]Liu Zheng(刘政),Zhang Jiayi(张嘉艺),Luo Haolin(罗浩林)et al.Acta Metallurgica Sinica(金属学报)[J],2016,52(2):177
[18]Liu Zheng(刘政),Chen Qingchun(谌庆春),Guo Song(郭颂)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(4):859
[19]Kanga C G,Baeb J W,Kima B M.Journal of Mechanical Science and Technology[J],2007,187-188(12):344
[20]Bai Y L,Xu J,Zhang Z F et al.Transactions of Nonferrous Metals Society of China[J],2009,19(5):1104
[21]Liu Z,Mao W M,Zhao Z D.Transactions of Nonferrous Metals Society of China[J],2006,16(1):71
[22]Dwivedi P S,Sharma S,Mishra R K.Procedia Materials Science[J],2014,6(10):1524
[23]Gao Zhongtang(高中堂),Hu Rui(胡锐),Wang Jun(王军)et al.Acta Metallurgica Sinica(金属学报)[J],2014,50(12):1471
[24]Liu Dongmin(刘东明),Zhao Jiuzhou(赵九洲),Ye Hengqiang(叶恒强).Acta Metallurgica Sinica(金属学报)[J],2003,39(4):375
[25]Liu Zheng(刘政),Zhang Jiayi(张嘉艺),Yu Zhaofu(余昭福).Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2015,25(11):3026
[26]Wang Shunchneg(王顺成),Wen Jinglin(温景林),Zhou Tianguo(周天国)et al.Journal of Materials Science and Engineering(材料科学与工程)[J],2005,23(1):15
[27]Hu Gengxiang(胡赓祥),Cai Xun(蔡珣),long Yonghua(戎咏华).Foundations of Materials Science(材料科学基础)[M].Shanghai:Shanghai Jiaotong University Press,2000:150
[28]Gao Yimin(高义民).Metal Solidification Principle(金属凝固原理)[M].Xi’an:Xi’an Jiao tong University Press,2010:30
[29]Zhu G L,Xu J,Zhang Z F et al.Transactions of Nonferrous Metals Society of China[J],2010,20(S2):868
[30]Philippe T,Voorhees P W.Acta Material[J],2013,61(11):4237