Flow characteristics of special Fe-Ni-Cr alloys and some steels at elevated temperatures

Abstract

The results of "creep" tests at different temperatures are given for three groups of alloys. The 11 metals in the first group included commercial alloys of nickel, chromium, and iron, both with and without tungsten, and low chromium steels containing also tungsten, vanadium, or molybdenum. The second group comprised two carbon steels, a Z X A per cent nickel steel and two low nickel chronmium steels which were tested only at 700°F.; the 12 alloys of the third group were melted in a high-frequency induction furnace, and their compositions were selected to show the general trends at 1,000°F. in the load-carrying ability of castings of the nickel-chromium-iron system.. A metallographic study of the creep-test specimens revealed intercrystalline weakness in some of the wrought nickel-chromium-iron alloys especially at temperatures between 1,160°and 1,390°F. A study was also made of the effect of deformation in the creep tests at different temperatures on the hardness and impact resistance of a chromium vanadium steel at atmospheric temperatures.

Effect of Spark Plasma Sintering (SPS) at Temperatures of 900 and 950oc for 5 Minutes on Microstructural Formation of Fe-25Ni-17Cr Austenitic Stainless Steel

“…Therefore, this steel is used for high temperature components of jet engines, power plants and nuclear reactors. In general, the stainless steel has been widely developed as wrought and casting products [5]- [7]. Wrought products are found in the form of sheets, bars, pipes and profiles that need an additional process such as forming, joining, machining, finishing to become the final product.…”