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A new material for cold forging tools
Institut für Werkstofle, Ruhr-Universität Bochum, Bochum, Germany .
lnstitutet för Metallforskning, Stockholm, Sweden .
Laboratoire de Mécanique de Lille, Lille, France .
lnstitutet för Metallforskning, Stockholm, Sweden .ORCID-id: 0000-0001-8542-9006
Vise andre og tillknytning
1998 (engelsk)Inngår i: Computational materials science, ISSN 0927-0256, E-ISSN 1879-0801, Vol. 11, nr 3, s. 166-180Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A new tool material for cold forging applications was developed using numerical simulation techniques (FEM) for the design and a powder metallurgical route (HIP) for the production. The basic idea was to find an optimized microstructure of the two phase material by simulating different distributions of hard particles within the metal matrix. On the micro-scale, loading was applied by a field of deformations which was obtained by a macroscopical simulation of a particular cold forming process in bolt making. A new double dispersion microstructure was found to show the best resistance against crack propagation. Specimens were produced by hot isostatic pressing. Afterwards the new material was tested in the laboratory. Wear resistance and bending strength of the double dispersive material are comparable to a standard dispersion material with the same volume fraction of particles, but fracture toughness is increased by about 30%. Testing the new material in bolt making showed that the life time of the tool is increased by a factor of 8.

sted, utgiver, år, opplag, sider
Elsevier, 1998. Vol. 11, nr 3, s. 166-180
Emneord [en]
cold forging tools; numerical simulation technique; powder metallurgic route; crack propagation; metal
HSV kategori
Identifikatorer
URN: urn:nbn:se:oru:diva-55304DOI: 10.1016/S0927-0256(98)00002-0ISI: 000074881900004Scopus ID: 2-s2.0-0001136925OAI: oai:DiVA.org:oru-55304DiVA, id: diva2:1071248
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Tilgjengelig fra: 2017-02-03 Laget: 2017-02-03 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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