Process of making an austempered ductile iron article

Details Process of making an austempered ductile iron article Process of making an austempered ductile iron article

1988-06-14

1989-11-14

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

148138, 74567, C21D 900

Patent

active

048804770

ABSTRACT:
An austempered ductile iron alloy with a mixed austenitic-bainitic structure is made by a method which enables the iron to withstand high cyclical stresses while having a high resistance to abrasion. Articles such as automobile roller-follower camshafts that are made from the iron alloy may have portions thereof selectively austempered to reduce the overall cost and time required to manufacture the article.

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patent: 4541878 (1985-09-01), Muhlberger et al.
D. A. Harris et al., "The Products of the Isothermal Decomposition of Austenite in a Spheroidal Graphite Cast Iron", Feb. 1970, Iron and Steel, pp. 53-60.

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