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| Effect of Nitrogen on Tensile Strength at Room Temperature and Creep Rupture Life of TP347H HeatResistant Austenitic Stainless Steel |
ZANG Huaxun1,LUO Lin1,XU Gang1,XIAO Xueshan1,
ZHAO Junliang2,ZHU Changchun2 |
| 1. Institution of Materials, Shanghai University, Shanghai 200072, China;2. Baoshan Iron and Steel Co., Ltd., Shanghai 200940, China |
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Abstract The addition of nitrogen on austenitic steel TP347H can modify its structure and enhance its mechanical properties. The results show that when the content of added nitrogen is higher than 0.123%, the precipitation of ferrite can be effectively inhibited in the hightemperature solution. The addition of nitrogen also significantly improved the tensile strength at room temperature and creep rupture lift. Thus, the TP347H austenitic stainless steel containing nitrogen can be used as a heatresistant material in new highperformance ultrasupercritical thermal power units.
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Received: 01 January 1900
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2009, Vol. 44 
