Abstract Effects of carbon and nitrogen on precipitation and tensile behavior in 15Cr-15Mn-4Ni austenitic stainless steels
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Effects of carbon and nitrogen on precipitation and tensile behavior in 15Cr-15Mn-4Ni austenitic stainless steels

机译：碳和氮对15Cr-15Mn-4Ni奥氏体不锈钢中析出和拉伸行为的影响

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摘要

AbstractPrecipitation behavior and tensile properties have been investigated for 15Cr-15Mn-4Ni austenitic steels containing 0.2wt% carbon and/or 0.2wt% nitrogen. During aging at 600–1000°C, precipitates such as σ, M23C6, and Cr2N were formed and time-temperature-precipitation diagrams were constructed. The type, size, and density of precipitates depended on the carbon and nitrogen contents. The nitrogen addition suppressed carbide formation while the effect of carbon addition on nitride precipitation was comparatively small. The evolution of tensile properties after aging is explained by the changes in solid solution strengthening and deformation modes caused by the precipitation. The precipitation of M23C6slightly decreased yield strength and elongation while it increased ultimate tensile strength. On the other hand, the precipitation of Cr2N hardly affected tensile properties due to its low volume fraction.
机译： 摘要 23 C 6 ，并形成Cr 2 N，并绘制了时间-温度-沉淀图。沉淀物的类型，大小和密度取决于碳和氮的含量。氮的添加抑制了碳化物的形成，而碳的添加对氮化物沉淀的影响相对较小。时效后拉伸性能的变化可以解释为沉淀引起的固溶强化和变形模式的变化。 M 23 C 6 的沉淀略微降低了屈服强度和伸长率，但增加了极限拉伸强度强度。另一方面，Cr 2 N的沉淀由于其体积分数低而几乎​​不会影响拉伸性能。

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