Effect of the Testing Temperature on the Impact Property of a Multilayered Soft–Hard Copper–Brass Block

The impact property is one of the most significant mechanical properties for metallic materials. In the current work, a soft–hard copper–brass block with a high yield strength of ~320 MPa and good uniform elongation of ~20% was prepared, and the effect of the testing temperature on its impact proper...

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Bibliographic Details
Published in:Coatings (Basel) 2022-09, Vol.12 (9), p.1236
Main Authors: Liu, Tong, Li, Jiansheng, Liu, Kezhang, Wang, Mengmeng, Zhao, Yu, Zhou, Zhongchen, Wei, Yong, Yang, Qi, Chen, Ming, Mao, Qingzhong, Sun, Yufeng
Format: Article
Language:English
Subjects:
Analysis
Annealing
Brass
Brasses
Copper
Crack propagation
Deformation
Deformation effects
Deformations (Mechanics)
Dimpling
Dynamic testing
Elongation
Fractures
High temperature
Hot pressing
Interfacial bonding
Liquid nitrogen
Materials
Mechanical properties
Plastic deformation
Room temperature
Tension tests
Yield stress
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Summary:The impact property is one of the most significant mechanical properties for metallic materials. In the current work, a soft–hard copper–brass block with a high yield strength of ~320 MPa and good uniform elongation of ~20% was prepared, and the effect of the testing temperature on its impact property was explored. The results showed that the impact energy was decreased with the increase in testing temperature. The impact energies at liquid nitrogen temperature (LNT), room temperature (RT), and 200 °C were 8.15 J, 7.39 J, and 7.04 J, respectively. The highest impact energy at LNT was attributed to the coordinated plastic deformation effects, which was indicated by the tiny dimples during the process of the delamination of soft–hard copper–brass interfaces. The high temperature of 200 °C can weaken the copper–brass interface and reduce the absorption of deformation energy, result in low impact energy.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings12091236