Journal article
Structural refinement and property optimization in an Fe-23Cr-8.5Ni duplex stainless steel
An Fe-23Cr-8.5Ni duplex stainless steel was used to prepare samples with different volume-fraction-weighted grain sizes (d(alpha gamma)), ranging from the nano-scale to the micrometer-scale by cold rolling and subsequent annealing. The cold rolled sample with d(alpha gamma) of 72 nm showed a high yield strength of about 1.3 GPa but only a small tensile elongation.
An abrupt increase of ductility was observed as d(alpha gamma) increased to 375 nm, resulting in a good combination of yield strength of 738 MPa and tensile elongation of 29%. Further increase of d(alpha gamma) up to the micrometer-scale results in continued decreases in yield strength but with only a limited improvement in the ductility.
Language: | English |
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Year: | 2017 |
Pages: | 012045 |
Proceedings: | 38th Risø International Symposium on Materials Science |
ISSN: | 1757899x and 17578981 |
Types: | Journal article |
DOI: | 10.1088/1757-899X/219/1/012045 |
ORCIDs: | Huang, X. |