| 摘要 |
High density iron alloys are produced by a process comprising (a) moulding a powder mixture comprising Fe and at least one reinforcing element, selected from C, Cu, Ni, Cr, Mn, Mo and W; (b) presintering the shaped body at a temp. between 600 and 1200 degrees C at which the reinforcing component does not yet diffuse into iron and the reinforcement produced during the pre-forming is annuled; (e) rapidly heating the material for a short time to substantially prevent diffusion of the reinforcing element(s) into iron; and (d) hot-pressing the body under a pressure of 4-7 T./cm2. - By this method, the resistance of the body to plastic deformation is lowered and a product of a very high density (e.g. 99.5% theor.) is obtained.
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