PONDEROUS COMPOSITE BLANK AND METHOD OF ITS MANUFACTURE Russian patent published in 1994 - IPC

FIELD: metallurgy, particularly, manufacture of blanks of chemically active alloys. SUBSTANCE: blank contains pores uniformly distributed in matrix (capacity: 0.5 to 500.0 cu. microns), which makes up 0.02 to 0.07 of the blank volume. Pores are filled with inert matter that enters into liquid state at working temperature and makes up about 0.020 to 15.0 volume of pores. Disclosed method prescribes filling capsule with inert gas to gage pressure of 0.1 to 0.5 MPa, compacting it at isostatic pressure , and conducting heat treatment at temperature of , where K represents coefficient equal to 0.01 to 0.06 and allowing for waiting time, (°C); σ_0.2 - represents the matrix compact material yield limit (MPa), and P_г denotes inert gas gage pressure in filling capsule (MPa). EFFECT: advanced technique. 3 cl, 1 tbl