EFFECT OF AUSTEMPERED TEMPERATURE ON THE MICROSTRUCTURE AND PROPERTIES OF B-BEARING CADI
Yufan Sun (),
Hanguang Fu,
Xingye Guo (),
Zhenguo Xing (),
Wenhang Yin () and
Jian Lin ()
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Yufan Sun: School of Materials Science and Engineering, Beijing University of Technology, Number 100, Pingle Garden, Chaoyang District, Beijing 100124, P. R. China
Hanguang Fu: School of Materials Science and Engineering, Beijing University of Technology, Number 100, Pingle Garden, Chaoyang District, Beijing 100124, P. R. China
Xingye Guo: School of Materials Science and Engineering, Beijing University of Technology, Number 100, Pingle Garden, Chaoyang District, Beijing 100124, P. R. China
Zhenguo Xing: ��Handan Huiqiao Composite Material Technology Co., Ltd., Handan 056000, Hebei Province, P. R. China
Wenhang Yin: ��Gangnuo New Materials Co., Ltd., Handan 057650, Hebei Province, P. R. China
Jian Lin: School of Materials Science and Engineering, Beijing University of Technology, Number 100, Pingle Garden, Chaoyang District, Beijing 100124, P. R. China
Surface Review and Letters (SRL), 2022, vol. 29, issue 12, 1-12
Abstract:
Carbidic austempered ductile iron (CADI) is a new type of wear-resistant material with high performance developed in recent years. The effect of austempered temperature on the microstructure and properties of high B-bearing CADI was investigated. Boron is an element that significantly interferes with the spheroidization process. When the boron content in CADI is high, the crystallization of spheroidal graphite in the as-cast microstructure is hindered, and its roundness, spheroidization rate, and volume fraction are significantly reduced. The results of its heat treatment process show that with the increase of austempered temperature, the volume fraction of residual austenite in the matrix increased, the size of acicular ferrite becomes coarser, and the ferrite also increases significantly, and the macroscopic hardness and wear resistance of the specimens gradually decreased.
Keywords: Austempered temperature; carbidic austempered ductile iron; boron alloying; hardness; wear resistance (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218625X22501645
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