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.
作者
蔡小平
尹进南
张志鹏
冯培忠
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)
出处
《粉末冶金技术》
CAS
CSCD
北大核心
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)。
