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- W2348321279 abstract "The effects of welding thermal cycle on the microstructure and mechanical properties of the coarse grained heat affected zone(CGHAZ) of fine grained antiweathering steel are studied by using thermal simulation test.The results indicate that the HAZ microstructure of the steel is bainite and a little martensite when the cooling time from 800 ℃ to 500 ℃(t8/5) is less than 8 s.With longer t8/5,proeutectoid ferrite gradually occurs on the original austenite grain boundary.When t8/5 is longer than 18 s,the microstructure consists of ferrite and pearlite,and the original austenite grain size is obviously coarsened with increased proeutectoid ferrite.With longer t8/5,the impact toughness of CGHAZ at-20 ℃ and 0 ℃ decreases slowly;but the-40 ℃ toughness decreases remarkably.The hardness of CGHAZ is decreased gradually with longer t8/5,but it is higher than that of base metal.There is no softened zone in HAZ." @default.
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- W2348321279 date "2008-01-01" @default.
- W2348321279 modified "2023-09-26" @default.
- W2348321279 title "Microstructure and Mechanical Properties of Coarse Grain Heat Affected Zone of Fine Grained Antiweathering Steel" @default.
- W2348321279 hasPublicationYear "2008" @default.
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