Showing papers by "Kaiser Aluminum published in 1986"
TL;DR: The tortuosity factor for volume diffusion in porous solids, τ, is constructed mathematically from properties of their connected porosity based on Hg porosimetry and related measurements as discussed by the authors.
139 citations
41 citations
Patent•
21 Mar 1986TL;DR: In this paper, high strength and high toughness are combined in an aluminum-based metallic product by dispersing particles of an aluminumbased metal having toughness of at least about 20 foot-pounds (27 N.m.) through a matrix of aluminum-bimodal metal having a yield strength of about 30 ksi (206 x 10 3 kN/m 2 ).
Abstract: High strength and high toughness are combined in an aluminum-based metallic product by dispersing particles of an aluminum-based metal having toughness of at least about 20 foot-pounds (27N.m.) through a matrix of aluminum-based metal having a yield strength of at least about 30 ksi (206 x 10 3 kN/m 2 ).
40 citations
Patent•
21 Apr 1986TL;DR: In this article, HCl-contaminated gas streams are purified by contacting the contaminated gas with an alumina-containing material which has been promoted with an alkaline earth metal salt.
Abstract: HCl-contaminated gas streams are purified by contacting the contaminated gas with an alumina-containing material which has been promoted with an alkaline earth metal salt.
36 citations
TL;DR: In this paper, the effect of deformation heating and strain rate sensitivity on flow localization during torsion testing of 6061 aluminum was investigated both theoretically and experimentally, and the analysis was validated by conducting high strain rate experiments on the 6061 alloy at a variety of temperatures.
24 citations
TL;DR: In this paper, the model originally proposed by Austin et al. has been modified in the light of further investigation of the breakage laws in SAG milling, and experiments show that fast autogenous breakage can be treated as a first-order breakage with an overall specific breakage rate which incorporates fracture and chipping, while slow breakage is cushioned by the accumulation of fine material.
20 citations
Patent•
18 Mar 1986TL;DR: In this article, a brazed aluminum product is improved by subjecting the product to a heat treatment at a temperature of 300° F to 800° F for at least about one hour, preferably preceded by cooling the product in a temperaure below the temperature ultimately selected for the treatment, and in any event below about 550° F.
Abstract: Corrosion resistance in a brazed aluminum product is improved by subjecting the product to a heat treatment at a temperature of 300° F. to 800° F. for at least about one hour, preferably preceded by cooling the product to a temperaure below the temperature ultimately selected for the treatment, and in any event below about 550° F. The useful life of brazed products such as automotive radiators is increased several times as a result of this treatment.
16 citations
Patent•
06 Jan 1986TL;DR: In this paper, a metallurgical bond at the interface between an aluminium-lithium core alloy and a metallic liner is achieved by first forming a mechanical bond along the interface betweent he core and liner, under moderated temperature and reduction conditions, and then heating the composite without simultaneous reduction to cause diffusion of the elements across the core-liner interface.
Abstract: O A metallurgical bond at the interface between an aluminium-lithium core alloy and a metallic liner is achieved by first forming a mechanical bond along the interface betweent he core and liner, under moderated temperature and reduction conditions, and then heating the composite without simultaneous reduction to cause diffusion of the elements across the core-liner interface. The resultant metallurgical bond secures the layers together to form a composite which can be worked, shaped and fabricated by normal reduction techniques.
13 citations
Patent•
28 Oct 1986TL;DR: In this article, the vanadium is used as a core alloy in a vacuum brazing sheet and further corrosion resistance is achieved by processing the alloy in such a way that the final processing step is a cold working effected so as to reduce the sheet by 10% to 20%.
Abstract: An aluminium alloy contains vanadium as an alloying element. The vanadium is preferably at a concentration in the range from 0.02% to 0.4% by weight and imparts corrosion-resistance to the alloy, particularly when it is used as a core alloy in a vacuum brazing sheet. Further corrosion resistance is also achieved by processing the alloy or brazing sheet in such a manner that the final processing step is a cold working effected so as to reduce the sheet by 10% to 20%.
13 citations
TL;DR: In this paper, two Al-2.1wt.%Li alloys, one with a 2.2 wt.% Cu addition, and the other containing 1.1 wt% Mg, were evaluated for mechanical properties.
10 citations
Patent•
13 Aug 1986TL;DR: In this paper, used frying oils are regenerated and made suitable for reuse by treating the used oils with a composition consisting of a mixture of activated clay or magnesium silicate with a gel-derived alumina.
Abstract: Used frying oils are regenerated and made suitable for reuse by treating the used oils with a composition consisting of a mixture of activated clay or magnesium silicate with a gel-derived alumina. The treating composition contains from about 15% by weight to about 75% by weight gel-derived alumina, balance activated clay or magnesium silicate. Treatment with the composition significantly reduces the free fatty acid content of the used oil with simultaneous improvement in color and other important properties thus resulting in a purified oil of substantially extended service life.
01 Jan 1986
TL;DR: In this paper, the authors compared the performance of AA 7050-T7451 and AA 7049-T 7351 with the established AA 7075 alloy, smooth and precracked specimens from 32- and 76mm-thick plates of each alloy were subjected to 105 months of exposure in a marine atmosphere.
Abstract: To compare the stress corrosion resistance of the newer high-strength alloys, Aluminum Association (AA) 7049 and 7050, with the established AA 7075 alloy, smooth and precracked specimens from 32- and 76-mm-thick plates of each alloy were subjected to 105 months of exposure in a marine atmosphere. The smooth specimen results revealed that the performance of AA 7050-T7451 and 7049-T7351 approached that of 7075-T7351, even though their strength levels were equal to or greater than the specified minimum values for AA 7075-T651. The 76-mm plates of all of the alloys were more resistant than the corresponding thinner 32-mm plates. Threshold stress intensities (KIscc) for the 32-mm plates could not be estimated because of obvious self-loading effects in the precracked specimens. KIscc values for the 76-mm AA 7049 and 7050 plates were estimated to be less than 10 MPa m vs 25 to 30 MPa m for AA 7075-T7351. It remains unclear to what extent specimen self-loading affected this comparison.
Patent•
28 Apr 1986TL;DR: In this article, computer memory disk substrates which can be age hardened to a high yield strength after thermal flattening and yet are essentially free of magnesium silicide constituents detrimental to surface smoothness are prepared by replacing a portion of the magnesium usually includes in high amounts as an alloying element with zinc.
Abstract: Computer memory disk substrates which can be age hardened to a high yield strength after thermal flattening and yet are essentially free of magnesium silicide constituents detrimental to surface smoothness are prepared by replacing a portion of the magnesium usually includes in high amounts as an alloying element with zinc.
TL;DR: In this paper, experimentale experimentale sur les alliages Al-2,1Li-1,1 and 2,3 Cu-0,7 and 0 Mg soumis a des essais de traction.
Abstract: Etude experimentale sur les alliages Al-2,1Li-1,1 et 2,3 Cu-0,7 et 0 Mg soumis a des essais de traction. On montre que les sousgrains bien developpes conduisent a une rupture intersousgranulaire et a une reduction concomitante de la resilience. Cet effet est plus marque dans l'alliage contenant du Mg