Author: Paul Stratton
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 13
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Book Description
The consensus view is that a high carbon case gives gears the best overall properties, provided that there is no carbide network and the retained austenite has been reduced below 20 % by sub-zero treatment. This view is effectively enshrined in the SAE AMS 2759/7A standard. The sub-zero treatment usually takes place immediately after the quench to avoid austenite stabilization. However, for some parts with complex geometries that might crack during the treatment, a short low temperature temper is carried out first. Little is known on how this temper affects the subsequent sub-zero treatment. Three carburising steels used extensively in the aerospace industry were carburised to produce high retained austenite levels in the case using two different but typical carburising cycles. The retained austenite was determined by X-ray diffraction before and after sub-zero treatment was carried out in accordance with the standard and compared with that obtained when an intermediate temper was used. This study shows that for three typical carburising steels carburised using typical cycles, the efficacy of the sub-zero treatment is probably slightly reduced after the temper but not enough to be industrially significant.
Author: Alexander H. d'Arcambal
Publisher:
ISBN:
Category :
Languages : en
Pages : 140
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Book Description
Author: B. L. Patel
Publisher:
ISBN:
Category : Austenic steel
Languages : en
Pages : 174
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Book Description
Author: Peter Jurči
Publisher: MDPI
ISBN: 303650060X
Category : Science
Languages : en
Pages : 130
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Book Description
Steels and their heat treatment are still very important in modern industry because most industrial components are made from these materials. The proper choice of steel grades along with their suitable processing makes it possible to reduce the weight of the components, which is closely related to energy and fuel savings. This has decisive importance in branches such as the automotive, transport, consumer industries. A great number of novel heat- and surface-treatment techniques have been developed over the past three decades. These techniques involve, for example, vacuum treatment, sub-zero treatment, laser/electron beam surface hardening and alloying, low-pressure carburizing and nitriding, and physical vapour deposition. This Special Issue contains a collection of original research articles on not only advanced heat-treatment techniques—carburizing and sub-zero treatments—but also on the microstructure–property relationships in different ferrous alloys.
Author: Kiyoshi Funatani
Publisher: ASM International
ISBN: 1615032053
Category : Technology & Engineering
Languages : en
Pages : 1214
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Author: George Krauss
Publisher: ASM International
ISBN: 1627080848
Category : Technology & Engineering
Languages : en
Pages : 705
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Book Description
George Krauss, University Emeritus Professor, Colorado School of Mines and author of the best-selling ASM book Steels: Processing, Structure, and Performance, discusses some of the important additions and updates to the new second edition.
Author: Lauralice de Campos Franceschini Canale
Publisher: ASM International
ISBN: 1615030980
Category : Technology & Engineering
Languages : en
Pages : 651
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Book Description
Author: Geoffrey Parrish
Publisher: ASM International
ISBN: 1615032223
Category : Technology & Engineering
Languages : en
Pages : 249
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Book Description
Annotation Based on his training in metallurgy and experience in a large British gear manufacturing company, Parrish reviews the microstructural features of metal products that have been carbon case-hardened, and the influence of those features on the more important material properties. He is not concerned with the carbonizing process at all. He primarily addresses students of engineering and ferrous metallurgy, but also stress and design engineers who might want to understand more fully the specifications of the materials they are considering for their designs. He wrote the eight articles to summarize the field's literature of the early 1970s for his own convenience, but at invitation, published them as a series in the Heat Treatment of Metals during 1967-77, and collected them for a first edition of the volume in 1980. Annotation copyrighted by Book News, Inc., Portland, OR.
Author: Bernard S. Lement
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 198
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Book Description
Author: Samuel Jacob Rosenberg
Publisher:
ISBN:
Category : Iron
Languages : en
Pages : 52
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Book Description
