The new iron base powders for advanced automotive PM applications
by Gian Filippo Bocchini
International Journal of Materials and Product Technology (IJMPT), Vol. 15, No. 3/4/5, 2000

Abstract: The reasons for the industrial development of P/M parts are briefly reviewed. The progressive strength increases of sintered steels supported the growth of high stress applications. The biggest growth has been observed in the automotive industry. The influences of different alloy additions on processing are surveyed, together with the alloying methods that can be used in P/M. The need for specific test and assessment criteria for high property P/M steels is set out. In sintered steels a controlled and repeatable lack of homogeneity enhances the mechanical strength, with special respect to fatigue and impact. The introduction of diffusion-bonded materials, which began the second half of the Sixties, represented a dramatic break-through in the availability of high -strength sintered steels. The appearance of these new powder grades strongly contributed to the increase in P/M part production for car industry. More recently Mo prealloyed grades widened the range of high performance powder grades. Among different alloy additions, molybdenum represents the best combination of suitability to pressing and sintering, while its positive influence on hardenability is excellent. For about 15 years, Distaloy powders have been produced using a plain iron powder as a base. Recently, new grades have been introduced, which are based on an Fe -Mo alloy. The new grades have been purposely formulated considering previous experience and the increasing demands of exacting P/M part users.

Online publication date: Tue, 01-Jul-2003

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials and Product Technology (IJMPT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com