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- W2358565573 abstract "The effect of annealing time on the hardness of the weld, M42 HSS and X32 high strength steel is studied by using the annealing furnace. The result shows that when annealing temperature is between 820 ℃ and 820 ℃,with the extension of heat preservation time,the weld hardness at the beginning of the annealing declines very fast, then slowly, and the hardness has a linear relationship with the logarithm of time. By OM, EPMA and XRD test methods, the microstructure and element distribution of welded joints in the M42 high speed steel-X32 high strength steel dissimilar steel and the formation and transformation rules of carbides in joints after annealing are analyzed. The result shows that after annealing, the recrystallization occurs in the microstructure of weld and organizes into isometric crystal, and carbide spheroidizing also occurs. The elements of the base metal in weld joints diffuse to weld,and form M6 C type carbide of Fe3W3 C, M23 C type carbide of Cr23 C,M6C type carbide. Some grain boundary and phase boundary increase because of these carbides, so as to promote the carbide spheroidizing and reduce the weld hardness." @default.
- W2358565573 created "2016-06-24" @default.
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- W2358565573 date "2015-01-01" @default.
- W2358565573 modified "2023-09-25" @default.
- W2358565573 title "Research on annealing process for welded joint of the dissimilar steel——weld property and holding time" @default.
- W2358565573 hasPublicationYear "2015" @default.
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