锶变质处理对熔体吸氢及气孔形态的影响  

Effect of Sr modifying Treatment on Hydrogen Absorption of the Melt and the Shape of Porosities

作　　者：张忠华[1] 边秀房[1] 

机构地区：[1]山东工业大学材料科学与工程学院

出　　处：《铸造》1999年第1期5-8,共4页Foundry

摘　　要：锶变质处理促进熔体吸氢，原始氢含量较低时，熔体吸氢显著；原始氢含量较高时，熔体吸氢不明显，并且，随着时间的延长，增加的那部分氢逐渐析出。未变质处理的试样，气孔呈不规则缝隙状，内壁粗糙；变质处理后的试样，气孔多是规则的形状，内壁光滑圆整。Abstract Sr modifying treatment can increase the hydrogen absorption of the melt.When the initial hydrogen content is low,the melt will absorb hydrogen significantly,on the contrary,high hydrogen content in the melt leads to hydrogen absorption in smaller amounts.The absorbed hydrogen will gradually precipitated with increasing time.The porosities in non modified specimen are irregular and elongated and its inner walls are rough,porosities in modified specimen occur in the form of regularity and its inner walls are smooth and round.

关 键 词：AL-SR中间合金 变质处理 气孔 熔体吸氢 锶 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TG292[金属学及工艺—金属材料]