FeAl-316SS接头的反应行为、显微组织与力学性能OA北大核心CSTPCD
Reaction behavior,microstructure,and mechanical properties of FeAl-316 stainless steel joints
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 15s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.
蔡小平;尹进南;张志鹏;冯培忠
中国矿业大学材料与物理学院,徐州 221116中国人民解放军空军 93147 部队,成都 610000
冶金工业
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
FeAl intermetallics316 stainless steelspowder metallurgydissimilar joiningmechanical properties
《粉末冶金技术》 2024 (002)
107-114 / 8
国家自然科学基金资助项目(51611130064)
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