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Mechanical Properties and Corrosion Resistance of a Novel Ni‐Cr‐Mo Alloy

“…[1,2] The Nistelle C and Nistelle Super C specimens being studied were found containing Ni 3 (Mo, Cr) and Ni 4 (Mo, Cr), but not Ni 2 (Mo, Cr). This may be due to the fact that Ni 3 (Mo, Cr) and Ni 4 (Mo, Cr) phases are more stable than Ni 2 (Mo, Cr) phase in terms of the formation energy, as demonstrated by the research of Arya et al [7] Previous research, such as by Dymek et al [2] and Svistunova et al [6] showed the M 6 C carbides would precipitate at the grain boundaries of Ni-Mo-Cr alloys, in particular, after heat treatment. However, no carbides were found in the Nistelle C and Nistelle Super C specimens examined.…”

“…[4] An extensive amount of research on Ni-Cr-Mo alloys has been reported. [1,2,[4][5][6][7][8][9][10][11][12][13][14][15][16][17] One of the typical alloys is named Haynes 242 alloy with a nominal composition of Ni-8Cr-25Mo (wt.%); this material exhibits excellent high-temperature strength and ductility, low thermal expansion characteristics, good oxidation resistance and excellent fabricability. [1,2,5] The chemical composition and heat treatment of Ni-Cr-Mo alloys have also been investigated.…”

“…[1,2,5] The chemical composition and heat treatment of Ni-Cr-Mo alloys have also been investigated. [2,[6][7][8][9][10][11] Another popular Ni-Cr-Mo alloy, Nistelle C (also known as Hastelloy C), has also been developed. It has a nominal composition (wt.%) of Ni-16Cr-16Mo-4Fe-4W, where tungsten has the same solid solutioning effect as molybdenum, and iron are present as less expensive raw materials.…”