Sintered carbonitride alloy and method of producing

Details Sintered carbonitride alloy and method of producing Sintered carbonitride alloy and method of producing

1995-06-28

1997-08-19

Jordan, Charles T.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

419 23, 419 33, B22F 100

Patent

active

056598726

ABSTRACT:
There is provided a sintered titanium-based carbonitride alloy for metal cutting containing hard constituents based on Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and/or W and 3-30% binder phase based on Co and/or Ni. The structure contains 10-50% by weight well-dispersed Ti-rich hard constituent grains essentially without core-rim structure with a mean grain size of 0.8-5 .mu.m in a conventional carbonitride alloy matrix with a mean grain size of the hard constituents of 1-2 .mu.m. The Ti-rich hard constituent grains are essentially rounded, non-angular grains with an approximately logarithmic normal grain size distribution with a standard deviation of <0.23 logarithmic .mu.m.

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Copy of European Search Report dated Apr. 4, 1994: GB A-2 227 497 which corresponds to U.S. Patent 5,051,126 above. EP-A-O 302 635 which corresponds to U.S. Patent 4,957,548 above.

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