Heat-resistant alloys hardened with Ni3Nb
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Heat-resisting alloys KhN60MBVYu and KhN50MBBYu, hardened by precipitation of Ni3Nb, have high mechanical properties at room and operating temperatures.
The addition of 10% Fe promotes the formation of M7W6, grain refining of the solid solution, and accelerates the transformation of the metastable Ni3Nb phase with a fcc lattice into the equilibrium modification with an orthorhombic lattice.
The M7W6 phase in the grain boundaries of the KhN50MBVYu alloy provides high plasticity at maximum hardening temperatures.
KeywordsPrecipitation Mechanical Property Solid Solution Operating Temperature High Plasticity
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