492QS 射流燃烧室汽油机用活塞材质试验  

EXPERIMENTAL INVESTIGATION ON PISTON MATERIAL USED IN THE 492 QS FLUIDIC COMBUSTOR GASOLINE ENGINE

作　　者：姜镇崧[1] 刘友均[1] 李贵成[1] 蔡惠民[1] 费贻忠 

机构地区：[1]天津大学机械工程学院

出　　处：《天津大学学报》1998年第6期815-821,共7页Journal of Tianjin University(Science and Technology)

基　　金：国家科技六五攻关项目

摘　　要：讨论了用混合稀土对Ａｌ－Ｓｉ共晶合金的变质工艺，测定了合金的热抗拉强度、线膨胀系数和活塞的尺寸稳定性．结果表明：加入混合稀土１％后，ＺＬ１０８号合金的热抗拉强度提高了２６％，线膨胀系数降低，活塞的尺寸稳定性增加．The modified operation with a mixer of RE on the Al Si eutectic alloy is discussed.The high temperature tensile strength,linear expansion coefficent and size steadiness of a piston are measured.The results show that when a 1% mixer of RE is added,the high temperature tensile strength of the alloy increases by a factor of 26%,the linear expansion coefficient of the alloy decreases and the size steadiness of the piston is enhanced.

关 键 词：混合稀土 汽油机 铝硅共晶合金 燃烧室 活塞 

分 类 号：TK413.33[动力工程及工程热物理—动力机械及工程]