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document
Ohlund, C.E.I.C. (author), Lukovic, M. (author), Weidow, J (author), Thuvander, M (author), Offerman, S.E. (author)
A comparison is made between the mechanical properties of the ultra-high-strength steel KNDS4 of fastener grade 14.9 and of conventional, high-strength steels 34Cr4 of fastener grade 12.9 and 33B2 of grade 10.9. The results show that the ratio of the yield strength at elevated temperatures to the yield strength at room temperature is higher for...
journal article 2016
document
Öhlund, C.E.I.C. (author)
The research presented in this thesis aims to deepen our understanding of the effect of micro-alloying on the microstructure and mechanical property evolution during tempering of martensitic steel for fasteners. The ongoing trend of engine down-sizing has led to the need for stronger and more temperature resistant fasteners than currently...
doctoral thesis 2015