Cr-Ni-BASED ALLOY MATERIAL, SEMI-FINISHED PRODUCT, COMPONENT FOR COMBUSTION ENGINE, AND METHOD FO

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PROBLEM TO BE SOLVED : To provide a material having a high notch impact value and ductility, and excellent chemical property for high temperature corrosion and thermal erosion. SOLUTION : A Cr-Ni-based alloy material is used for manufacture of a semi-finished product as a starting material for forming especially a large diesel engine component 1, and has a composition expressed by (CrxNiyAz)Nk (in the expression, x+y+z+k=100%), wherein the element A is a more than one elements selected from La, Ce, Y, Hf, Sc, Si, C, S, P, Al, Zr, B, Mo, Fe, Mn, O, and a rare-earth element, the Cr content x satisfies 50%0%, by weight, the content z of the element A satisfies 0%≤z<50%, by weight, and the nitrogen content k satisfies 0.01%≤k≤0.1%, by weight. COPYRIGHT : (C)2009, JPO&INPIT