LONG-TERM HEAT RESISTANCE OF NICKEL BASE ALLOYS

Journal Article · Mon Jun 01 04:00:00 EDT 1959 · Metalloved. i Termichesk. Obrabotka Metal

OSTI ID:4198740

Levin, E E; Pivnik, E M

The relationship between the alpha phase grain expansion during annealing and the heat resistance of nickel base alloys was studied. Tests were made on three types of alloys (0.64% Al, 0.06% C, 14.8% Cr, 1.5% Nb, 1.69% Ti; 0.61% Al, O.O1% B, 0.03% C, 15.5% Cr, 1.28% Nb, 1.42% Ti; 1.3% Al, 0.010% B, 0.03% C; 16.4% Cr, 1.10% Nb, 1.6% Ti) quenched in water at 1100 deg ; annealing at 1000 deg for 2 hr, 900 deg for 1 hr, 800 deg for 2 hr; and annealed at 750 deg for 20 hr and 700 deg for 48 hr. The rate of grain growth is slowed by soaking at elevated temperatures. Additions of boron intensify grain expansion while the increase of aluminum content slows it. A certain relation was found between the grain expansion rate and the duration of heat resistance. (R.V.J.)

• Research Organization: Polzunov, Central Research Inst. of Boiler Construction
• NSA Number: NSA-14-000657
• OSTI ID: 4198740
• Journal Information: Metalloved. i Termichesk. Obrabotka Metal, Journal Name: Metalloved. i Termichesk. Obrabotka Metal Vol. Vol: No. 6
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ALUMINUM
ANNEALING
BORON
CARBON
CHROMIUM ALLOYS
COOLING
EXPANSION
GRAIN SIZE
HIGH TEMPERATURE
MATERIALS TESTING
METALS, CERAMICS, AND MATERIALS
NICKEL ALLOYS
NIOBIUM ALLOYS
PHASE DIAGRAMS
SPECIFIC HEAT
STABILITY
TITANIUM ALLOYS
TRACE AMOUNTS
WATER