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《Materials Review》 2018-S1
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Study of the Precipitation Behavior of Carbides During the Partition Process

JIANG Peiyang;ZHAO Fei;School of Materials Science and Metallurgical Engineering,Guizhou University;National Local Co-construction Engineering Laboratory for High Performance Metal Structure Material and Manufacture Technology,Guizhou University;  
In this paper,the carbides precipitated in the 60 Si2 CrVA spring steel with different QP processes were obtained by electrolytic extraction technology,the precipitation behavior of carbides was analyzed by XRD、SEM、EDX and TEM,and evolving regulars of the carbides in 60 Si2 CrVA was investigated.Results revealed that the size of carbides particles showed tendency toward enlargement with the rise of partition temperature;when the partition temperature reached 360℃,and the temperature continued to go up,the amount of carbides with a small size increased and appeared cluster phenomenon;there were three kinds of carbides M7 C3,MC and M23 C6 seperating out in the partition process;the analysis of XRD revealed the diffraction peak intensity of M7 C3 went down obviously when reached 360 ℃.The hardness of 60 Si2 CrVA decreases with the increase of the distribution temperature.
【Fund】: 国家自然科学基金(51571066;51461008)
【CateGory Index】: TG142.1;TG161
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