| 氮对新型无镍高氮奥氏体不锈钢塑性流变行为的影响 |
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| 引用本文： | 徐明舟,王立军,王建军,刘春明.氮对新型无镍高氮奥氏体不锈钢塑性流变行为的影响[J].沈阳黄金学院学报,2011(2):132-135. |
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| 作者姓名： | 徐明舟 王立军 王建军 刘春明 |
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| 作者单位： | 东北大学材料各向异性与织构教育部重点实验室,沈阳110819 |
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| 基金项目： | 辽宁省科技攻关计划（2007221007） |
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| 摘 要： | 利用Ludw igson模型研究了两种氮含量不同的无镍奥氏体不锈钢18Cr-12Mn-0.55N（质量分数/%）和18Cr-18Mn-0.63N在室温快速拉伸时的塑性流变行为.结果表明,由于N含量的增大,实验钢18Cr-18Mn-0.63N的加工硬化能力明显强于实验钢18Cr-12Mn-0.55N.N促进CrMnN奥氏体不锈钢中的短程有序,使位错在更高的应变水平进行单系滑移和平面滑移,推迟位错的多系滑移和交滑移,因而提高CrMnN奥氏体不锈钢的加工硬化能力.
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| 关 键 词： | 高氮奥氏体不锈钢 力学性能 加工硬化 塑性流变 |
Effect of nitrogen on plastic flow behavior of new-type nickel-free austenitic stainless steels |
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| Authors: | XU Ming-zhou WANG Li-jun WANG Jian-jun LIU Chun-ming |
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| Affiliation: | (Key Laboratory for Anisotropy and Texture of Materials,Ministry of Education,Northeastern University,Shenyang 110819,China) |
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| Abstract: | The plastic flow behavior of two types of high-nitrogen nickel-free stainless steels with different content of nitrogen 18Cr-12Mn-0.55N and 18Cr-18Mn-0.63N during high speed tensile deformation at room temperature was studied by using the Ludwigson model.The results show that the work-hardening ability of steel 18Cr-18Mn-0.63N is higher than that for the steel 18Cr-12Mn-0.55N with the higher content of N.The reason for the enhancement of work-hardening abilty produced by N in CrMnN austenitic stainless steel is due to the ability of N which promotes the formation of short-range ordering in CrMnN austenitic stainless steel.Thus it can make dislocations slip in sigle and planar way at higher strain level and delay multiple and cross slip of dislocations. |
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| Keywords: | high nitrogen austenitic stainless steel mechanical property strain hardening plastic flow |
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