The effect of aging on the tensile mechanical properties of high-purity binary Ni-10, -20, and-30 Wt pct Cr alloys |
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| Authors: | W E Clayton C R Brooks |
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| Affiliation: | (1) Proctor and Gamble, Cincinnati, Ohio;(2) Chemical and Metallurgical Engineering Department, The University of Tennessee, Knoxville, Tenn |
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| Abstract: | The variation of the tensile mechanical properties and hardness (at 25‡C) of three Ni-Cr alloys has been determined as a function
of aging time (up to 4 months) in the range 290 to 530‡C. Aging has a negligible effect on the 10 pct Cr alloy, and only a
slight effect on the 20 pct Cr alloy. However, the 30 pct Cr alloy showed a marked sensitivity to aging; for example, at 479‡C
the yield strength doubled after about 1 month, then decreased slightly at 4 months. The effect in the 30 pct Cr alloy is
due to the formation of the Ni2Cr superlattice. |
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