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Abstract
The microstructure, creep and oxidation properties of TiC particulate reinforced 304 stainless steels prepared using a new developed technology have been investigated. Experimental results show that small amounts of TiC addition to 304 stainless steel results in an increase in yield and tensile strength but a decrease in ductility over the temperature range 600–800°C. A reduction in strength occurs when excessive TiC is introduced. Creep properties of TiC reinforced steels are significantly higher than that of 304 stainless steel without TiC addition at temperatures between 700 and 800°C and under an applied stress of 55 MPa. Addition of TiC particles results in no breakaway oxidation, and a low oxidation rate is maintained in air at 850°C for 96 h oxidation, but oxidation resistance will significantly decrease if excessive TiC is added. In addition, adding TiC causes excellent spalling resistance.
