Iron base Si--Mn alloy or iron base Si--Mn--Ni alloy having good crushability and alloy powder thereof
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United States of America Patent
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Oct 19, 1999
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N/A
app pub date -
Jan 20, 1998
filing date -
Jul 28, 1997
priority date (Note) -
Expired
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Abstract
An object of the present invention is to provide an iron base Si--Mn alloy or an iron base Si--Mn--Ni alloy which can be easily crushed and can be manufactured in large quantity, and alloy powder thereof. An iron base Si--Mn--Ni alloy having good crushability and alloy powder thereof, comprising: C: 0.40 to 1.20% by weight, Si: 5.0 to 12.0% by weight, Mn: 19.0 to 42.0 % by weight, or Ni: not more than 30% by weight, and the balance being Fe, with the following equations satisfied: Si.gtoreq.11.89-2.92 C-0.077 Mn, Vickers hardness (Hv).gtoreq.550, and area ratio of dendrite structure .ltoreq.50%. An iron base Si--Mn--Ni alloy having good crushability and alloy powder thereof, comprising: C: 0.40 to 1.20% by weight, Si: 5.0 to 12.0% by weight, Mn: 19.0 to 42.0% by weight, or Ni: not more than 30% by weight, and the balance being Fe, with the following equations satisfied: Si.ltoreq.8.3 C+0.14 Mn, and relative permeability (.mu.).ltoreq.1.10.
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