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A New Look At Nodulizing Ductile Iron With Yttrium and Mischmetal Additives.

Authors
Neumeier-LA; Betts-BA
Source
82D Casting Cong & Expo Am Foundrymen's Soc Detroit Mich 4/78 86(78-60):18 pages
Link
NIOSHTIC No.
10009785
Abstract
The Bureau of Mines, U.S. Department of the Interior, investigated the potential of using ferroyttrium and mischmetal as low-flaring and fuming agents for nodulizing ductile iron. Three experimental ferroyttrium alloys of varying composition and purity were evaluated in induction-melted heats. Mischmetal and mischmetal silicide of commercial or experimental origin were also assessed. With appropriate processing conditions, 1-inch keel-block castings exhibiting over 65,000 psi tensile strength, 45,000 psi yield strength, and 15 to 20 pct elongation can be produced with either yttrium or mischmetal, although the latter is preferred from a cost standpoint and the lesser sensitivity to the precise amount added and inoculation requirements.
Publication Date
19780101
Document Type
OP;
Fiscal Year
1978
NTIS Accession No.
NTIS Price
Identifying No.
OP 2-79
Issue of Publication
78-60
NIOSH Division
RORC;
Source Name
82D Casting Cong. & Expo., Am. Foundrymen's Soc., Detroit, Mich, 4/78, V 86, No 78-60, Pp 249-66
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