Latest threads in Metallurgy discussionsshow only best voted threads
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need high aluminum content nickel allow
I need some tubing and round rod made of like 90% aluminum and maybe 5% nickel and 5% iron. Are there any commercial alloys in that ball park? It needs to be light weight and magnetically soft but not...
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13 years ago
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Q: cryogenic tempering appropriate for my application?
Cryogenic tempering (perhaps not the universally accepted terminology) has been recommended to me as an alternative to induction hardening and/or case carburizing in a pin used in a large thrust...
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13 years ago
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Zinc Cementation
Does anyone have any thoughts on Zinc Cementation for Thiosulfate? We have played with it. It gets about 70% of the precious metals out on the first pass. We would ultimately get the rest out on...
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13 years ago
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Ammonium Thiosulfate
We are having some success with leaching sulfide ores with Ammonium Thiosulfate. We are experimenting with a Renovare RenoCell (electrowinning) and zinc cementation/precipitation. Any thoughts on the...
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13 years ago
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Nonmetallic Inclusions
Hi everybody! I'm currently searching for papers or books about the formation and growth of nonmetallic inclusions in the molten steel during the deoxidisation. I found some interesting articles in a...
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13 years ago
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Q: How does Manganese promote work hardening in "Hadfield's Manganese"
Steels with large percentages of manganese (14%+) have the unique ability to form a very hard layer on their surface when subjected to impact. The hardening is limited to a thin surface layer and the...
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13 years ago
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Resistivity of Cu/Al Alloys
A few years ago, I saw the graph of the resistivity of opper/aluminum alloys, with respect to mole fraction of each species. I remember its shape distinctly, but now I can't find it anywhere, with...
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13 years ago
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Resistivity nikel coatings on copper
Hi all I am working on an electric apparatus. I have an interrupter showing strange (high and unstable) electrical resistance between its contacts, all mechanics is ok, the only uncommon aspect is...
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14 years ago
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Cognizance 2010-The Annual Technical Festival of IIT Roorkee
The Department of Metallurgical and Materials engineering , IIT Roorkee is glad to invite you to COGNIZANCE =9210- The Annual Technical festival of IIT Roorkee to be held from 26-28 March 2010. The...
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14 years ago
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Stress corrosion on Al alloy 6082-T6 ?
Hi All I just wanto to ask if someone has ever experienced stress corrosion on Aluminium 6082-T6 alloy. I am working on a strange problem, where I have a component made of this alloy and a breakage...
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14 years ago
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Teknik Penjanaan Wang Di Internet
Teknik Penjanaan Wang Di Internet Menjana Pendapatan Berterusan Tanpa Modal Walau Sesen Pun Teknik dapat membantu menjana kewangan bersama 1000%beretika dan menurut peraturan Google[Big G]. Teknik...
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14 years ago
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Tempering 6061? (was: Welding 6061 weakens it?)
Some in these groups have opine'd that welding 6061-T6 would make it lose its treatment and result in T1. Aging at room temps would bring it to, maybe, T2 after a month. TIG welding will bring the...
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14 years ago
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Welding 6061 weakens it?
Lined up a welder to weld a small bit onto a bike frame right at the 1/4 inch plate where the rear wheel attaches to the frame. Once welded, does this weaken the frame at this point? I presume that...
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14 years ago
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Zinc-clad primer?
Sherwin-Williams store sells spray paints, one of which is called "Zinc-Clad Cold Galvanize Primer". What is this for? When would one want to choose this over the "regular" primer? Is this an...
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14 years ago
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Welding 6061
Have a project which requires 1/4" 6061 plate be welded to 1/16 wall tube 6061. What risk is there of success welding these 2 together? I've read that pre-heating the parts to 400F-plus will minimize...
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14 years ago
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