ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2012, Vol. 33 ›› Issue (6): 43-45.

• 组织和性能 • 上一篇    下一篇

新型高硅奥氏体耐热不锈钢TD305B的高温抗氧化性

白晋钢,郭宏钢,王明涛   

  1. 山西太钢不锈钢股份有限公司技术中心,太原030003
  • 收稿日期:2012-05-19 出版日期:2012-12-01 发布日期:2022-09-29
  • 作者简介:白晋钢( 1973-),男,硕士研究生,高级工程师,1997年东北大学毕业,钢铁生产工艺研究。

Oxidation Resistance of a New High Silicon Austenite Heat Resistant Steel TD305B at Elevated Temperature

Bai Jingang, Guo Honggang,Wang Mingtao   

  1. Technical Center, Shanxi Taigang Stainless Steel Co Ltd, Taiyuan 030003
  • Received:2012-05-19 Published:2012-12-01 Online:2022-09-29

摘要: 采用增重法研究了高硅奥氏体耐热不锈钢TD305B(/%:0.05C、3.30Si、0.80Mn、19.50Cr、13.30Ni、0.05N)和传统耐热不锈钢SUS310S(/%:0.05C、0.60Si、0.80Mn、24.60Cr、19.10Ni、0.05N)在500~1 000℃空气中氧化性能,通过扫描电镜及能谱分析(EDS)对试样表面氧化膜的形貌进行了分析。结果发现,在700~1 000℃新型高硅耐热不锈钢TD305B较传统耐热不锈钢SUS310S抗氧化性好,主要是由于TD305B钢除了在高温时基体与氧容易形成FeO·Cr2O3和FeCr2O4、NiCr2O4等保护性氧化膜外,还由于含有一定量的硅,在距表面20μm处形成了一层SiO2阻止了氧化的进一步加剧,使得TD305B钢具有良好的耐高温氧化性能。

关键词: 高硅耐热不锈钢TD3O5B, 高温, 抗氧化性

Abstract: The oxidation resistance of a new high silicon austenite heat resistant stainless steel TD305B (/% : 0. 05C, 3. 30Si, 0. 80Mn, 19. 50Cr, 13. 30Ni, 0. 05N) and a traditional heat resistant stainless steel SUS310S (/% : 0. 05C, 0. 60Si, 0. 80Mn, 24. 60Cr, 19. lONi, 0. 05N) at 500 〜1 000 ℃ air atmosphere has been studied by weight gain method, and an analysis on morphology of surface oxide film of sample is carried out by scanning electron microscope and energy dispersive X-ray spectrometer (EDS). It is found that at 700 〜1 000℃ the oxidation resistance of the new high silicon heat resistant steel TD305B is better than that of the traditional heat resistant austenite steel SUS310S, besides at elevated temperature the matrix of steel easily reacts with oxygen to form a protective oxide film including FeO • Cr2O3 and FeCr2O4- NiCr2O4 , because the new steel TD3O5B has a definite amount silicon, a layer of SiO2 is formed at distance of 20 μm from surface to inhibit further oxidation, as a result the steel TD3O5 B has a better oxidation resistance at elevated temperature.

Key words: High Silicon Heat Resistant Stainless Steel TD305B, Elevated Temperature, Oxidation Resistance