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首页> 外文会议>Pacific Rim International Conference on Advanced Materials and Processing(PRICM 5) pt.1; 20041102-05; Beijing(CN) >The Aging Behavior for Low Carbon Bainitic Steel Bearing Cu-Nb
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The Aging Behavior for Low Carbon Bainitic Steel Bearing Cu-Nb

机译：低碳贝氏体钢轴承Cu-Nb的时效行为

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摘要

By the aid of optical microscope, Hardness measurement, SEM, TEM and the chemical quantitative phase analysis technique, the influence of copper, niobium, and chromium on the aging hardness has been investigated. The aging precipitation behavior and the interaction between various precipitates have also been discussed. The results indicate that since there are multi aging-hardening elements in the steel the aging hardening behaviors are complicated. During the aging the ε-copper, and carbides containing iron and chromium will precipitate. Also, new niobium carbonitride precipitation occurs. These precipitation processes cause marked hardening effect and various hardness peaks. The ε-copper can precipitate at dislocation and lath boundaries preferentially. During the aging the bainite lath united and became wider and then gradually vanished.
机译：借助光学显微镜，硬度测量，SEM，TEM和化学定量相分析技术，研究了铜，铌和铬对时效硬度的影响。还讨论了老化沉淀行为以及各种沉淀之间的相互作用。结果表明，由于钢中存在多种时效硬化元素，因此时效硬化行为复杂。在时效过程中，ε-铜和含有铁和铬的碳化物会沉淀。此外，还会发生新的碳氮化铌沉淀。这些沉淀过程会导致明显的硬化效果和各种硬度峰值。 ε-铜可优先在位错和板条边界处析出。在老化过程中，贝氏体板条结合并变宽，然后逐渐消失。

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