氮含量對0Cr16Ni5Mo馬氏體不銹鋼高溫熱變形行為影響

張寶麗; 陳剛; 孫永慶; 袁武華; 梁劍雄

doi:10.13374/j.issn2095-9389.2017.10.010

氮含量對0Cr16Ni5Mo馬氏體不銹鋼高溫熱變形行為影響

doi: 10.13374/j.issn2095-9389.2017.10.010

1) 湖南大學材料科學與工程學院, 長沙 410082
2) 鋼鐵研究總院, 北京 100081

基金項目:

湖南省自然科學基金資助項目(2016JJ2025)

詳細信息

中圖分類號: TG142.7
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出版歷程
- 收稿日期: 2017-01-10

Effect of nitrogen content on the hot deformation behavior of 0Cr16Ni5Mo martensitic stainless steel

1) College of Materials Science and Engineering, Hunan University, Changsha 410082, China
2) Central Iron and Steel Research Institute, Beijing 100081, China

摘要

摘要: 采用Gleeble3800試驗機對三種不同N含量的0Cr16Ni5Mo馬氏體不銹鋼進行等溫熱壓縮實驗.通過對真應變-應力曲線及壓縮后變形組織的觀察,發現相同熱變形條件下,N含量的增加提高了試驗鋼的流變應力,抑制了再結晶晶粒長大.采用Zener-Hollomon參數,以流變應力方程為基礎,構建三種本構模型.通過觀察擬合應力值與實驗值的離散性,確定雙曲正弦模型更適用于本試驗鋼的本構方程計算,優化此計算模型,獲得了三種試驗鋼的本構方程.
- 馬氏體不銹鋼 /
- N含量 /
- 流變應力 /
- 再結晶晶粒 /
- 本構模型
Abstract: The hot deformation behavior of 0Cr16Ni5Mo martensitic stainless steel with different nitrogen contents was studied on a Gleeble3800 thermal machine. The true strain-stress curves and deformed microstructures of the tested steels were investigated. The result shows that with an increase in nitrogen content, the stress increases and the recrystallized grain size reduces. Using the flow stress equation combined with Zener-Hollomon parameters, three constitutive equation models were established. Comparing the stress values from the constitutive equation models and the experiment, the hyperbolic sine model performed best. So, the constitutive equations for the tested steels were obtained by using the hyperbolic sine mode, with some improvements made during the calculation.
- martensitic stainless steel /
- nitrogen content /
- flow stress /
- recrystallized grain /
- constitutive model

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參考文獻(13)

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