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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TL;DR: Results are presented from mechanical experiments and atom probe tomography on samples with similar grain size but different amounts of solute segregation and different boundary chemistries, to shed light on the dominant mechanisms of hardening phenomena in nanocrystalline metals after annealing.
87 citations
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TL;DR: In this paper, a new crystal plasticity model for face-centered cubic metals exhibiting deformation twinning is presented and assessed based on a comprehensive and original experimental dataset for twinning-induced plasticity (TWIP) steel.
87 citations
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TL;DR: A series of strain-controlled, low-cycle fatigue experiments have been conducted on 42CrMo steel under various loading paths including circular, square, cruciform, and rectangular paths as discussed by the authors.
Abstract: —
A series of strain-controlled, low-cycle fatigue experiments have been conducted on 42CrMo steel under various loading paths including circular, square, cruciform, and rectangular paths Present experiments have shown that there is additional hardening under non-proportional cyclic loading Non-proportional cyclic additional hardening also results in a shorter life for multiaxial low cycle fatigue A non-proportionality measure of strain path based on both a physical basis and macromechanical phenomena is proposed The loading path effect on additional hardening is also described well Low-cycle fatigue damage accumulation and the evolution process under non-proportional loading is analysed via the Continuum Damage Mechanics Model of Chaboche A non-proportinality measure is introduced in the damage evolution equation and a modified Coffin-Manson type formula is derived A novel fatigue life prediction approach based on the critical-plane concept of Brown and Miller is proposed
87 citations
01 Jan 2006
TL;DR: The European Materials Research Society Conference (E-MRS), Nice, France, 29.05-02.06.2006 Reference CRPP-CONF-2006-012 Record created on 2008-05-13, modified on 2016-08-08 as mentioned in this paper
Abstract: Note: European Materials Research Society Conference (E-MRS), Nice, France, 29.05-02.06.2006 Reference CRPP-CONF-2006-012 Record created on 2008-05-13, modified on 2016-08-08
87 citations
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27 May 2014-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, a non-isothermal ageing (NIA) process was proposed for an Al-Zn-Mg-Cu alloy aiming to accommodate heating and/or cooling procedures in large components.
Abstract: A non-isothermal ageing (NIA) process was proposed for an Al–Zn–Mg–Cu alloy aiming to accommodate heating and/or cooling procedures in large components. The precipitation was investigated systematically via TEM observation and DSC analysis. The age-hardening and the conductivity variation were examined to evaluate the potential in the strength and the corrosion resistance, respectively. Double cantilever beams (DCB) experiments were carried out to evaluate the stress corrosion cracking (SCC) resistance. A secondary precipitation occurs during the cooling procedure of the NIA process, which leads to an increase in the precipitates number density and thus induces an extra hardening. The secondary precipitation also contributes to the increase of conductivity of the alloy in the most part of the cooling procedure, but leads to a slight decrease at the terminal stage. The alloy׳s resistance to SCC improves persistently as the NIA proceeds. The evolution in microchemistry in grain boundary and adjacent regions is supposed to contribute to the improvement of corrosion resistance. The current study suggests that the NIA process (40 °C→190 °C→100 °C, 20 °C/h) is capable of enduing higher mechanical performances and comparable corrosion resistance to Al–Zn–Mg–Cu alloys, as compared with that of the T74 condition, which can be technically significant for ageing treatment of large components.
87 citations