18-18-0.5N高氮奧氏體不銹鋼冷軋變形過程中的組織演變和形變強化

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Microstructure evolution and mechanical hardening of 18-18-0.5N high-nitrogen austenitic stainless steel during cold rolling

1. Shougang Research Institute of Technology, Beijing 100041, China;
2. Institute for Structure Materials, Central Iron & Steel Research Institute, Beijing 100081, China;
3. Key Laboratory of Yunnan Province for Advanced Materials, Kunming University of Science and Technology, Kunming 650093, China

摘要: 利用XRD、TEM、SEM和拉伸實驗等分析測試方法研究了18-18-0.5N高氮奧氏體不銹鋼在冷軋變形過程中的組織演變和形變強化規律.結果發現:18-18-0.5N高氮奧氏體不銹鋼在冷變形過程中并未發生形變誘導相變,微觀組織和力學性能在變形量為43.8%附近出現轉折.提出了屈服強度隨應變變化的預測方程.
- 高氮奧氏體不銹鋼 /
- 冷軋 /
- 組織演變 /
- 形變強化
Abstract: XRD, TEM, SEM and tension testing were used to investigate the microstructure evolution and mechanical hardening of 18-18-0.5N high-nitrogen austenitic stainless steel during cold rolling. The experimental results show that there is no sign of deformation-induced phase transformation. A inflection point of microstructure and mechanical properties was found at 43.8% reduction. An excellent predicting equation of yield strength to strain was presented.
- high-nitrogen austenitic stainless steel /
- cold rolling /
- microstructure evolution /
- mechanical hardening