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Hardening (metallurgy)
About: Hardening (metallurgy) is a research topic. Over the lifetime, 25584 publications have been published within this topic receiving 376012 citations.
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88 citations
15 Apr 1994-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the effects of interfacial reactions on the age hardening response of the materials are also characterized and discussed in detail, and it is shown that it is possible to control the interfacial reaction either to totally suppress age-hardening or to give rise to hardening in the case of a normally non-hardenable matrix alloy.
Abstract: AlSiMg matrix composites have been fabricated by the compocasting technique using as-received and oxidized particles. Interfacial reactions occurring during fabrication and during subsequent remelting of the composites were characterized by detailed analytical transmission electron microscopy. The effects of these reactions on the age hardening response of the materials are also characterized and discussed in detail. The results show that it is possible to control the interfacial reactions either to totally suppress age hardening or to give rise to hardening in the case of a normally nonhardenable matrix alloy.
87 citations
TL;DR: In this article, the fatigue behavior of ultrafine-grained copper produced by severe plastic deformation was performed in fully reversed tension/compression under constant plastic strain amplitudes, and it was shown that UFG copper possesses unusual fatigue properties which are determined by both the small grain size and the specific non-equilibrium state of GBs.
87 citations
TL;DR: In this article, the authors measured the stress/strain curves of many number of copper crystals having various radii from 0.06 to 1 mm and found that the range of easy glide increases considerably when the radius of crystal decreases.
Abstract: Stress/strain curves of many number of copper crystals having various radii from 0.06 to 1 mm were measured. The range of easy glide increases considerably when the radius of crystal decreases. In the case of suitably oriented crystal the range of easy glide reaches to 50 per cent in shear, when the radius of crystal decreases less than 0.1 mm. The extrapolation of the range of easy glide to the infinitesimal radius gives a value between 40 to 80 per cent in shear irrespectively to the initial crystal orientation. The hardening rate in the easy glide region considerably decreases with the decreasing crystal radius. Meanwhile, the critical shear stress, the stress required for the transition from the easy glide to the rapid hardening region, the hardening rate in rapid hardening region reveal only slight dependence on the crystal radii, i.e. the former two slightly increase and the last slightly decreases with the decreasing crystal radii. These results are discussed qualitatively by introducing a concept ...
87 citations
TL;DR: In this article, the strength of the nanocrystalline solid solution depends on both solid solution hardening and grain boundary hardening while the latter makes the major contribution to the total strength.
87 citations