Topic
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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15 Mar 2005-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the effect of silicon on the stability of secondary carbides was studied using transmission electron microscopy and small-angle neutron scattering, and it was concluded that silicon has a detrimental effect as it shifts the secondary hardening peak towards lower tempering temperatures.
Abstract: In comparison with the conventional AISI H11 tool steel, which contains approximately 1 wt.% silicon, the modified steel AISI H11 (∼0.35 wt.% silicon) exhibits improved tensile and fatigue properties at 550 °C – the estimated tool surface temperature during the high-pressure injection of aluminium alloys. The effect of silicon on the stability of secondary carbides was studied using transmission electron microscopy and small-angle neutron scattering. Silicon has a considerable influence on the precipitation of secondary carbides. A higher volume fraction and density of small particles were observed in the low-silicon-grade steel, both after heat treatment and after fatigue testing. The final discussion focuses on the influence of silicon in the precipitation sequence. It is concluded that silicon has a detrimental effect as it shifts the secondary hardening peak towards lower tempering temperatures.
111 citations
TL;DR: In this article, the hardness changes after deformation and annealing can be correlated with the shear band patterns around/underneath Vickers indents in bulk metallic glasses.
111 citations
TL;DR: In this paper, a comparison is made between recently published theories on the plastic behaviour of dispersion-hardened alloys in which no plastic relaxation occurs, and it is shown that Tanaka and Mori's (1) calculation is a rigorous lower bound for the hardening to be expected.
110 citations
TL;DR: In this paper, the authors examined clustering and hardening in W 2 at.% Re and W 1 at.% Os alloys induced by 2 MeV W + ion irradiation at 573 and 773 K. They found that the presence of osmium significantly increased post-irradiation hardening.
110 citations
TL;DR: In this article, a new technique for measurement of plane-strain work hardening has been developed which uses tensile loading and computer analysis for interpretation, and which eliminates the experimental uncertainties of large strain gradients, friction, and out-of-plane bending inherent in the usual planestrain deformation modes.
Abstract: A new technique for measurement of plane-strain work hardening has been developed which uses tensile loading and computer analysis for interpretation, and which eliminates the experimental uncertainties of large strain gradients, friction, and out-of-plane bending inherent in the usual plane-strain deformation modes. Plane-strain and tensile work-hardening curves have been measured for 2036-T4 aluminum alloy using several types of sheet specimens. The work-hardening rate in plane strain is lower than that in uniaxial tension. In each case a Voce-type empirical work hardening law represents the data well. Hill’s theories cannot account for these data because the isotropic hardening assumption is violated. A method of analysis was introduced to determine Hill’s newm parameter as a function of strain andm was found to vary from 1.6 to 2.0 in the strain range 0.02 ≤ e ≤ 0.18.
110 citations