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Interface reactions between copper and 50In-50Pb (wt%) alloy by solid-state aging
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Radionuclide Solid:liquid partitioning in an aged, reducing-grout wasteform recovered from a disposal facility
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Effects of NO2 aging on bismuth nanoparticles and bismuth-loaded silica xerogels for iodine capture
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Optimizing Bendability and Hardness of Age-Hardenable Aluminum Sheets through Local Thermo-Mechanical Processing
This paper introduces a novel thermo-mechanical process to modify the local mechanical properties of 6xxx aluminum (Al-Mg-Si-Cu) alloy sheets. In this process, two pairs of rollers travel along the length of a sheet while locally bending and unbending it so that the final shape and thickness of the sheet remains unchanged. Room temperature bending/unbending (B/U) produces a deformation gradient through thickness and local hardening in both T4 and T6 sheets (with 41% and 18% greater Vickers hardness, respectively). High temperature bending/unbending performed at ~ 500°C via induction heating, produces significant improvements in local formability as measured by bend testing. Formability levels equivalent to the as-received T4 temper are achieved within the processed zones of T6 sheets with bend angles of ~ 150°, without disturbing the T6 temper in the remainder of the sheet. Finite element simulations and characterization explained the mechanical property improvements and the heterogenous microstructure with weakened Cube texture. Due to its similarity with the roller hemming process, and its compact dimensions, the apparatus developed for B/U has the potential for seamless integration with roller hemming robots to selectively process high strength aluminum sheet materials within mass-production settings.
Food Preparation Practices for Infants Aged From 7 to 13 Months
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Effect of surface characteristics and environmental aging on wetting of Cr-coated Zircaloy-4 accident tolerant fuel cladding material
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Effect of aging and α’ segregation on oxidation and electrochemical behavior of FeCrAl alloys
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Molecular mechanism of the role of Mare Nectaris in the Feng-Flavor Baijiu aging
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On the effect of elemental partitioning to secondary phases after solution and aging heat treatments in a Co-Ni-based superalloy
Here, this paper presents the phase stability and elemental partitioning in a Co-40Ni-10Al-7.5W-10Cr-3Nb-0.06B-0.6C (at.%) superalloy (referred to as 3Nb) after a two-step heat treatment. The resulting microstructure consisted of γ, γ', MC carbides and µ-Co 7 W 6 phase decorating the regions near and at the grain boundaries. Nb preferentially partitioned to the γ'-phase and other elements such as Ni, Cr and W were responsible for the μ-phase formation.
Viscoplastic lattice strain during repeated relaxation of age-hardened Al alloy
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