真空条件下铝液中氢溶解度的计算  

Calculation of Hydrogen Solubility in Al-Melt under Vacuum Condition

作　　者：秦颐鸣 庄林忠[2] 蒙志保 陈贞南 唐鑫[3] Qin Yiming;Zhuang Linzhong;Meng Zhibao;Chen Zhennan;Tang Xin(Geely Baise Mining Group Co.,Ltd.;SKL of Advanced Metal Material,University of Science and Technology Beijing;College of Materials Science and Engineering,Guilin University of Technology)

机构地区：[1]吉利百矿集团有限公司,广西百色533000 [2]北京科技大学新金属材料国家重点实验室,北京100083 [3]桂林理工大学材料科学与工程学院

出　　处：《特种铸造及有色合金》2020年第10期1131-1134,共4页Special Casting & Nonferrous Alloys

基　　金：广西重点研发计划资助项目(桂科AB19185007)

摘　　要：模拟计算了重力场和真空条件耦合作用下H溶解度随着铝熔池深度的变化。结果表明,H溶解度随着熔池深度和温度的降低而降低,随着真空度的提高而降低,而理论计算值均低于实际的H溶解度,可能是因为熔池深度方向H浓度不均匀或者存在H2气泡。通过控制真空度、熔池深度,可以控制铝液的H溶解度至较低范围。给出了铝液H溶解度低于0.2mL/100g时的真空度、熔池深度的理论控制范围。The effects of molten pool depth on H solubility in Al-melt under the coupling of gravity and vacuum condition were calculated.The results reveal that the H solubility is decreased with the decrease of molten pool depth and temperature and the increase of vacuum degree,while the H solubility for theoretical calculation were lower than that in actual measurement,which may be attributed to the uneven H concentration in the depth direction and the existence of H-gas bubbles.By controlling the degree of vacuum and the depth of molten pool,the lower H solubility can be achieved,and the theoretical range of the vacuum degree and the bath depth of Al-melt is suggested for the H solubility less than 0.2 mL/100 g.

关 键 词：真空 氢 压力 熔池深度 溶解度 

分 类 号：TG146.21[一般工业技术—材料科学与工程]