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

CAI Xiaoping; YIN Jinnan; ZHANG Zhipeng; FENG Peizhong

doi:10.19591/j.cnki.cn11-1974/tf.2021110009

Volume 42 Issue 2

Apr. 2024

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CAI Xiaoping, YIN Jinnan, ZHANG Zhipeng, FENG Peizhong. Reaction behavior, microstructure, and mechanical properties of FeAl-316 stainless steel joints[J]. Powder Metallurgy Technology, 2024, 42(2): 107-114. doi: 10.19591/j.cnki.cn11-1974/tf.2021110009

Citation:

CAI Xiaoping, YIN Jinnan, ZHANG Zhipeng, FENG Peizhong. Reaction behavior, microstructure, and mechanical properties of FeAl-316 stainless steel joints[J]. Powder Metallurgy Technology, 2024, 42(2): 107-114. doi: 10.19591/j.cnki.cn11-1974/tf.2021110009

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

doi: 10.19591/j.cnki.cn11-1974/tf.2021110009

1.
School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China
2.
Troops 93147, Air force of Chinese People’s Liberation Army, Chengdu 610000, China

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Corresponding author: E-mail: pzfeng@cumt.edu.cn; pzfeng@cumt.edu.cn
Received Date: 2021-12-16
Publish Date: 2024-04-29

Abstract

Abstract

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.
- FeAl intermetallics,
- 316 stainless steels,
- powder metallurgy,
- dissimilar joining,
- mechanical properties

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References(21)

References

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