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首页> 外文期刊>Journal of Materials Engineering and Performance >The Effect of Bainite Type on the Evolution of Carbide Constituent During an Accelerated Aging in Cr-Mo-V Steel
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The Effect of Bainite Type on the Evolution of Carbide Constituent During an Accelerated Aging in Cr-Mo-V Steel

机译：贝氏体类型对CR-MO-V钢加速老化过程中碳化物成分进化的影响

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摘要

This paper aims to understand the effect of the type of bainite (i.e., the lower, the upper and the granular, developed by bainitic hardening at 550, 650 and 750 degrees C, respectively) on the evolution of carbide constituent due to a subsequent aging (at 700 degrees C for up to 500h). The secondary carbides were identified by x-ray diffraction in the configurations of M3C, M7C3, M23C6, M2C, M6C and MC (M=Fe, Cr, Mo, Mn and V), which varied with the time of aging. Despite that the three types of bainites shared similar constituent of carbides after the aging for 2-100h, the constituent of the upper bainite (M7C3+M23C6+MC) was different from that of granular bainite and lower bainite (M7C3+M23C6+MC+M6C) after the aging for 500h. The concentration of the enrichment of alloying elements in ferrite matrix plays a dominant role in governing the precipitation of carbides in the aged steel.
机译：本文旨在了解贝氏体类型（即，较低，上，上部和粒状，在550,650和750℃下，分别由550,650和750摄氏度开发的骨质硬化产生的效果在随后的老化引起的碳化物成分的演变 （高达500h的700℃）。 通过随着老化的时间而改变的M3C，M7C3，M23C6，M2C，M6C和MC（M = Fe，Cr，Mo，Mn和V）的构型中，通过X射线衍射鉴定二次碳化物。 尽管三种类型的贝氏体在老化后共用了类似的碳化物组分2-100h，但上贝卡铝石（M7C3 + M23C6 + MC）的成分与粒状贝氏体和下贝氏体（M7C3 + M23C6 + MC +的组成部分不同 老化后的m6c）500h。 铁氧体基质中合金元素的富集的浓度起到控制铜碳化物中碳化物沉淀的显着作用。

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