FeAl-316SS接头的反应行为、显微组织与力学性能  

Reaction behavior,microstructure,and mechanical properties of FeAl-316 stainless steel joints

作　　者：蔡小平 尹进南 张志鹏[1] 冯培忠[1] CAI Xiaoping;YIN Jinnan;ZHANG Zhipeng;FENG Peizhong(School of Materials Science and Physics,China University of Mining and Technology,Xuzhou 221116,China;Troops 93147,Air force of Chinese People’s Liberation Army,Chengdu 610000,China)

机构地区：[1]中国矿业大学材料与物理学院,徐州221116 [2]中国人民解放军空军93147部队,成都610000

出　　处：《粉末冶金技术》2024年第2期107-114,共8页Powder Metallurgy Technology

基　　金：国家自然科学基金资助项目(51611130064)。

摘　　要：采用热爆反应与粉末冶金相结合的工艺实现了FeAl金属间化合物与316不锈钢(316SS)的有效连接,研究了连接温度(700、800、900℃)对界面成分组成和力学性能的影响。结果表明,当加热到637℃时,FeAl反应层温度瞬间升高到1050℃,发生明显的热爆反应,并伴随持续约15 s的剧烈放热。随着温度从700℃提高到900℃,界面由Fe-316SS、316SS(Al)交替组成的形式转变为由FeAl-316SS(Al)-316SS组成。三种温度下均形成良好的冶金结合,当连接温度为800℃时,抗剪切强度可达75 MPa。The effective joining between the FeAl intermetallic compounds and the 316 stainless steels was realized by the combination of thermal explosion reaction and powder metallurgy.The effect of joining temperature(700,800,900℃)on the interface composition and mechanical properties were studied.The results show that,the temperature of FeAl reaction layer rises to 1050℃instantaneously when it is heated to 637℃,and the obvious thermal explosion reaction occurs,accompanied by the intense heat release lasting about 15 s.With the increase of joining temperature from 700℃to 900℃,the interface is composed of Fe-316SS and 316SS(Al)alternately,which is transformed into FeAl-316SS(Al)-316SS.Sound metallurgical bonding is formed at all these three temperatures.When the joining temperature is 800℃,the shear strength reaches 75 MPa.

关 键 词：铁铝金属间化合物 316不锈钢 粉末冶金 异种材料连接 力学性能 

分 类 号：TF124[冶金工程—粉末冶金] TG441.2[冶金工程—冶金物理化学]