The research reported in this paper has statistically shown that aging at room temperature can strengthen gray cast iron up to 9.9%. The Brinell hardness did not change with aging time; thus, the ratio of tensile strength to hardness also increased. The occurrence of aging seems to be related to nitrogen in solid solution inferrite. The implications of these results relate to SAE specifications, machinability and casting mold yield.
CITATION STYLE
Nicola, W. M., & Richards, V. (1999). Age Strengthening of Gray Cast Iron , Phase I : Statistical Verification. AFS Transactions, 107, 749–755.
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