Increasing the ductility of cast niobium alloys by heat treatment
The supersaturated solid solution comprising the major part of the cast metal in alloys VN3 and VN4 tends to decompose at 1000–1500°C.
Heat treatment conditions were established for alloys VN3 (1400°C for 3–5 h) and VN4 (1500°C for 3 h+1300°C for 10 h) ensuring overaging of the cast metal and a substantial increase of the ductility and workability.
KeywordsHeat Treatment Solid Solution Ductility Treatment Condition Niobium
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