Stretch-Flange Formability of High-Strength Steel Kimitsu R&D Lab., Nippon Steel Corporation

Format:

Conference/Event

Author/Creator:

Matsuzu, Nobuhiko, author.

Conference Name:

International Congress & Exposition (1991-02-25 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1991

Summary:

A high stretch-flange formability is required of the suspension parts and road wheels. So, the factors effecting stretch-flange formability of hot rolled high strength steel sheet were investigated. The stretch-flange formability was evaluated with a punched hole expansion ratio (λ = d/d0).The inclusion (MnS et cetera) deteriorates λ. The hole expansion property is affected by a microstructure. Bainite is most desirable. Incidentally, the form of the cementite in bainite has effect on it. Increase of Si accelerates a fine dispersion of cementite and improves the hole expansion property.The microstructure has the effect on the shape of burr on the punched face, a micro-crack condition or a crack propagation property and as the result, it affects the hole expansion property

Notes:

Vendor supplied data

Publisher Number:

910513

Access Restriction:

Restricted for use by site license