Master alloys containing lanthanum

Details Master alloys containing lanthanum Master alloys containing lanthanum

C - Chemistry, Metallurgy

22

C

75/14, 53/97

C22C 37/00 (2006.01) C21C 1/00 (2006.01) C22C 35/00 (2006.01) C22C 37/04 (2006.01) C22C 38/00 (2006.01)

Patent

CA 1155688

ABSTRACT OF THE DISCLOSURE: This invention relates to the use of lanthanum in the production of iron-based alloys. Accordingly, is provided a method comprising adding at least 0.0001 to about 0.5 to 2 weight percent of lanthanum to said iron-based alloy during its production. Thus the solidification curve is modified, thereby reducing or preventing certain defects of said alloys, such as pin holes and cavities in spheroidal graphite cast-irons, carbides in flaky graphite grey-iron; the castability, rollability and anisotropy of steels are improved.

324830

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