Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Post sintering operation
Patent
1989-04-06
1989-12-05
Lechert, Jr., Stephen J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Post sintering operation
419 11, 419 25, 419 26, 419 38, 419 54, 419 55, 419 57, 419 60, C21D 100
Patent
active
048851337
ABSTRACT:
A wear-resistant sintered iron-based alloy and a process for producing the alloy are described, wherein the alloy comprises a first phase having a martensite composition which comprises from 0.5 to 3.0 wt % of Cr, from 0.4 to 1.0 wt % of Mn, from 0.1 to 0.4 wt % of Mo, and the balance of Fe, based on the total amount of said first phase; a second phase having a martensite and Cr carbide composition which comprises from 10 to 20 wt % of Cr and the balance of Fe, based on the total amount of said second phase; and from 1.0 to 2.5 wt % of C, based on the total amount of said alloy; wherein said first phase and said second phase are present as a mixture containing from 10 to 80% by volume of said second phase, based on the total volume of said alloy; and said alloy is substantially free from any residual austenite.
REFERENCES:
patent: 4556533 (1985-12-01), Oaku et al.
patent: 4561889 (1985-12-01), Oaku et al.
Lechert Jr. Stephen J.
Sumitomo Electric Industries Ltd.
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