Weak-Beam Imaging of Coherent Twin Boundaries After High-Temperature Deformation

1985 ◽  
Vol 43 ◽  
pp. 242-243
Author(s):  
Krishna Rajan
Keyword(s):  
High Temperature ◽  
Base Alloy ◽  
Dark Field ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Weak Beam ◽  
Dark Field Microscopy ◽  
Cobalt Base Alloy ◽  
Cobalt Base

Weak beam dark field microscopy has been used extensively to study deformation induced intragranular defects in materials. However as noted by Tones et al weak beam imaging is also an asset in examining intergranular defects. The localisation of strain contrast close to the defect core by weak beam imaging allows the interaction of matrix dislocations with the boundary (to form extrinsic dislocations) to be studied more easily. Also, the reduction in extinction distance with weak beam microscopy produces a higher density of extinction contours, which allows topographical discontinuities associated with long range strain fields to be more readily observed.Thus in the present study, where we were interested in interfacial phenomena during high temperature deformation processing of a cobalt base alloy (Co-Cr-Mo), weak beam imaging was used to obtain a better understanding of the role of intergranular defects.

Fracture Surface in Low Cycle Fatigue of HA-188 Cobalt Base Alloy at High Temperature

1978 ◽  
Vol 27 (292) ◽  
pp. 99-103 ◽  
Author(s):  
Kiyoshi KITA ◽  
Masanori KIYOSHIGE ◽  
Masatake TOMINAGA ◽  
Junzo FUJIOKA
Keyword(s):  
High Temperature ◽  
Fracture Surface ◽  
Base Alloy ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Cobalt Base Alloy ◽  
Cobalt Base

HAYNES ALLOY No. 36

Alloy Digest ◽  
1959 ◽  
Vol 8 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Base Alloy ◽  
Heat Treating ◽  
Jet Engine ◽  
Temperature Performance ◽  
Cobalt Base Alloy ◽  
Cobalt Base ◽  
Haynes Alloy

Abstract HAYNES Alloy No. 36 is a cobalt-base alloy having excellent strength at temperatures up to 1800 deg. F. It is the cast modification of wrought HAYNES Alloy No. 25 and has been used successfully in jet engine blading and nozzle vanes. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as heat treating, machining, and joining. Filing Code: Co-17. Producer or source: Haynes Stellite Company.

ALTEMP V36

Alloy Digest ◽  
1961 ◽  
Vol 10 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Precipitation Hardening ◽  
Base Alloy ◽  
Heat Treating ◽  
High Oxidation ◽  
Cobalt Base Alloy ◽  
Cobalt Base ◽  
Oxidation And Corrosion ◽  
Hardening Heat Treatment

Abstract Altemp V36 is a cobalt-base alloy recommended for high temperature applications. It has high oxidation and corrosion resistance. It shows a slight response to a precipitation-hardening heat treatment. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep, deformation, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Co-25. Producer or source: Allegheny Ludlum Corporation.

CARPENTER L-605 ALLOY

Alloy Digest ◽  
1987 ◽  
Vol 36 (8) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Elevated Temperatures ◽  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Temperature Performance ◽  
Cobalt Base Alloy ◽  
Cobalt Base ◽  
Oxidation And Corrosion

Abstract CARPENTER L-605 alloy is a nonmagnetic cobalt-base alloy that has good oxidation and corrosion resistance and high strength at elevated temperatures. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Co-81. Producer or source: Carpenter.

NICKELVAC L-605

Alloy Digest ◽  
1967 ◽  
Vol 16 (10) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Base Alloy ◽  
Heat Treating ◽  
Temperature Range ◽  
Temperature Performance ◽  
Cobalt Base Alloy ◽  
Cobalt Base

Abstract NICKELVAC L-605 is a double vacuum melted, cobalt-base alloy for high temperature applications. It is recommended for highly stressed parts operating in the temperature range of 1700 to 2000 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Co-53. Producer or source: Allvac Metals Company, A Teledyne Company.

The role of interphase boundary phenomena on mechanical behavior during high-temperature deformation

1991 ◽  
Vol 49 ◽  
pp. 594-595
Author(s):  
B. Hidalgo-Prada
Keyword(s):  
High Temperature ◽  
Mechanical Behavior ◽  
Interphase Boundary ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Metallographic Analysis ◽  
Two Phase ◽  
Transmission Electron ◽  
Phase Size

The influence of interphase boundary on the mechanical behavior of a two-phase (α/β) Ni-Modified Ti-6A1-4V alloy during superplastic deformation (SPD), has been investigated in the range of temperature and strain rate where maximum ductility is - attained.Uniaxial tests for constant and differential strain rates were performed over the - range of 5.0 x 10-5 s-1 to 5.0 x 10-3 s-1 and at temperature from 1023 to 1123 K. To optimize the initial microstructure, tensile specimens were static annealed in argon for 1 hour at 815 °C ( SA-1-815).Upon completion of the tests, specimens were quenched in pre-chilled argon to pre—serve the high temperature microstructure for metallographic analysis. The gage portion of the specimen was polished and etched in a solution of 2 ml HF, 3 ml HNO3 and 95 ml H2O. Subsequently, they were subjected to scanning and transmission electron - microscopy (SEM and TEM) examination. A Quantimet Image Analizer was used for determining the phase size, its distribution and volume fractions.

CRUCIBLE WF11

Alloy Digest ◽  
1962 ◽  
Vol 11 (7) ◽  
Keyword(s):  
High Temperature ◽  
Base Alloy ◽  
Heat Treating ◽  
Steel Company ◽  
Annealed Condition ◽  
Subsequent Aging ◽  
Temperature Performance ◽  
Crucible Steel ◽  
Cobalt Base Alloy ◽  
Cobalt Base

Abstract CRUCIBLE WF11 is a ductile cobalt-base alloy having exceptional mechanical properties at temperatures up to 1800 F in the fully annealed condition without subsequent aging. It is recommended for high temperature service. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as heat treating, machining, and joining. Filing Code: Co-33. Producer or source: Crucible Steel Company of America.

AISI No. 671

Alloy Digest ◽  
1981 ◽  
Vol 30 (10) ◽  
Keyword(s):  
High Temperature ◽  
Elevated Temperatures ◽  
Base Alloy ◽  
Turbine Blades ◽  
High Strength ◽  
Heat Treating ◽  
Age Hardening ◽  
Jet Engines ◽  
Cobalt Base Alloy ◽  
Cobalt Base

Abstract AISI No. 685 is a high-temperature, high-strength, cobalt-base alloy. It responds to an age-hardening heat treatment. At elevated temperatures it has high mechanical properties and excellent resistance to corrosion and oxidation. Its numerous applications include high-temperature hardware, turbine blades, parts for jet engines and aerospace components. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Co-79. Producer or source: High-strength, high-temperature alloy mills & foundries.

Sign in / Sign up

Export Citation Format

Share Document