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Abstract
The effect of variations in Cr content (5·25±0·25 wt.-%) on the physical and microstructural properties of ‘Ni-Span C’ alloy* has been investigated. Changes in microstructure hardness, modulus of elasticity, and Curie temperature after ageing are reported. Chromium increase in the Ni-Span composition range has been found to accelerate the formation of E precipitates and reduce the rate of hardening. It has also a more marked effect on the physical properties of Ni-Span C than that of binary Fe–Ni alloys.