Metal treatment – Compositions – Heat treating
Patent
1990-05-15
1991-11-26
Dean, R.
Metal treatment
Compositions
Heat treating
148 127N, 148162, 148410, 148426, 419 19, 419 20, C22F 110
Patent
active
050679864
ABSTRACT:
A process for producing coarse, longitudinally oriented column crystals with improved temperature change resistance and ductility in the transverse direction in a workpiece of any cross-section from an oxide-dispersion-strengthened nickel-base superalloy, which exists in fine-grained form, by annealing in the temperature range between 1000.degree. and 1200.degree. C., cooling to room temperature and isothermally annealing for coarse grain in the range between 1230.degree. C. and 1280.degree. C.
REFERENCES:
patent: 3067030 (1962-12-01), Dunn et al.
Japan Nickel Information Bureau, Forging and Annealing Monel. Metal and Nickel, pp. 50-53.
Fried Reinhard
Jongenburger Peter
Asea Brown Boveri Ltd.
Dean R.
Ip Sikyin
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