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Precipitation Strengthening in Al-Ni-Mn Alloys
Metallurgical and Materials Transactions A, 2015Precipitation hardening of eutectic and hypoeutectic Al-Ni alloys by 2 to 4 wt pct. manganese is investigated with focus on the effect of the alloys’ chemical composition and solidification cooling rate on microstructure and tensile strength. Within the context of the investigation, mathematical equations based on the Orowan Looping strengthening ...
Yangyang Fan +2 more
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Precipitation strengthening of aluminum alloys by room-temperature cyclic plasticity
Science, 2019Pushing and pulling for high strength High-strength aluminum alloys are important for producing lightweight cars, trains, and airplanes. The traditional strategy for doing this is through hours of high-temperature cycling to form precipitates in the alloy. Sun et al.
Wenwen Sun +6 more
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The ductility and microstructure of precipitation-strengthened alloys irradiated in HFIR
Journal of Nuclear Materials, 1984Abstract Six γ' and γ'/γ' strengthened Ni-base alloys have shown near-zero ductility after irradiation at 300 to 600°C in HFIR to a peak exposure of 9 dpa. Microstructural examination of the irradiated specimens showed that the loss of ductility in these alloys arises from the simultaneous existence of a strong matrix and weak grain boundaries.
W.J.S. Yang, M.L. Hamilton
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Fatigue of precipitate strengthened Cu–Ni–Si alloy
Materials Science and Technology, 1999AbstractThe fatigue resistance and tensile properties of a precipitate strengthened Cu–Ni–Si alloy have been investigated. Underaged material exhibited greater work hardening rates than either the peak aged or overaged material. It is proposed that this occurs because the δ-Ni2 Si precipitates can be cut by dislocations, but the significant difference ...
S.A. Lockyer, F.W. Noble
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Precipitation strengthening of stress-aged Al–xCu alloys
Acta Materialia, 2000Abstract Effects of stress aging on yield strength and yield anisotropy of single crystal and cube-textured polycrystalline Al–xCu alloys were investigated. The resulting microstructures were correlated with the yield stress and analyzed with respect to continuum mechanic models and computer simulations.
A.W Zhu, J Chen, E.A Starke
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A Novel Precipitation‐Strengthened Conductive Copper Alloy: Cu–Hf–Si Alloy
Advanced Engineering Materials, 2023The Cu–1.1 wt% Hf–0.1 wt% Si alloy containing various precipitates is studied as a novel precipitation‐strengthened alloy with high strength and high electrical conductivity. The Cu–Hf–Si alloy prepared by solution, cold rolling, and aging processes exhibits a hardness of 238.92 HV, a tensile strength of 691.01 MPa, a breaking elongation of 15.09%, and
Bingbing Shi +7 more
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Modeling quenching of precipitation strengthened alloys
Products of precipitation strengthened alloys characteristically lose their ability to develop peak properties as the rate of the quench from the solution temperature is reduced. An analytical model was developed which improved on a previous model to predict mechanical properties of such materials from time-temperature-property, TTP, C-curves and a ...James Thomas Staley, Roger D. Doherty
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Fracture of precipitation strengthened aluminum alloys—role of environment
Engineering Fracture Mechanics, 1990Abstract The increasing need for high strength, high performance, light weight and cost-effective materials has resulted in significant improvements and development of new aluminum alloys for structural applications. Several of these applications demand service of a structural member in aggressive gaseous and aqueous environments.
T.S. Srivatsan, T.S. Sudarshan
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The creep properties of precipitation-strengthened tin-based alloys
JOM, 2000Knowledge of the creep behavior of constituent phases and the effects of their interaction are important for understanding and predicting the creep behavior of solder alloys and for better alloy design in general. This article discusses the effect of precipitate size, distribution, and type on the creep properties of tin, a major constituent of nearly ...
Rodney J. McCabe, Morris E. Fine
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On the mechanism of precipitation strengthening in Cu-z.sbnd;Ti alloys
Scripta Metallurgica, 1984Abstract We have measured the ratio Ra of flow stresses for aged Cu-2.5 w/o Ti at 77 K and room temperature. Specimens solution treated and then aged at 500°C for 1, 4 and 8 hours (the second aging peak in this alloy) exhibited an average Ra value of 0.99 ± 0.021 (95% confidence interval). This value strongly suggests order strengthening, as do other
A.J. Porter, A.W. Thompson
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