Thermal Mechanical Crack Growth Rate of a High Strength Nickel Base Alloy

1986 ◽  
Vol 108 (2) ◽  
pp. 396-402 ◽  
Author(s):  
D. A. Wilson ◽  
J. R. Warren
Keyword(s):  
Crack Propagation ◽  
Crack Growth ◽  
Base Alloy ◽  
High Strength ◽  
Operating Conditions ◽  
Thermally Induced ◽  
Propagation Modeling ◽  
Computer Based ◽  
Mechanical Crack ◽  
Nickel Base

An understanding of thermal mechanical fatigue (TMF) crack propagation is fundamental to the application of fracture mechanics to gas turbine components. Typical operating conditions for a cooled turbine disk rim consist of a complex mechanical history and an associated variable amplitude thermal history. While thermally induced stress gradients are commonly incorporated in the mechanical history, the effects of thermal cycling on crack growth must be addressed in an appropriate fatigue model. A current computer-based empirical crack propagation modeling system has demonstrated effectiveness under isothermal conditions and can be readily expanded to include thermal-mechanical effects. The existing isothermal models were developed from an extensive data base and describe crack growth over a broad range of temperature and loading conditions. Building on this established system, a model of thermal-mechanical crack growth is being developed.

The Nature of Delta Phase Precipitation in Inconel 718

1982 ◽  
Vol 40 ◽  
pp. 724-725
Author(s):  
L. S. Lin ◽  
C. C. Law
Keyword(s):  
Inconel 718 ◽  
Base Alloy ◽  
High Strength ◽  
Physical Metallurgy ◽  
Nickel Base Alloy ◽  
Phase Precipitation ◽  
Weight Percentage ◽  
Delta Phase ◽  
The Subject ◽  
Nickel Base

Inconel 718, a precipitation hardenable nickel-base alloy, is a versatile high strength, weldable wrought alloy that is used in the gas turbine industry for components operated at temperatures up to about 1300°F. The nominal chemical composition is 0.6A1-0.9Ti-19.OCr-18.0Fe-3Mo-5.2(Cb + Ta)- 0.1C with the balance Ni (in weight percentage). The physical metallurgy of IN 718 has been the subject of a number of investigations and it is now established that hardening is due, primarily, to the formation of metastable, disc-shaped γ" an ordered body-centered tetragonal structure (DO2 2 type superlattice).

INCONEL ALLOY 722

Alloy Digest ◽  
1965 ◽  
Vol 14 (4) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Age Hardening ◽  
Nickel Base Alloy ◽  
Inconel Alloy ◽  
Temperature Performance ◽  
Nickel Base

Abstract INCONEL Alloy 722, formerly Inconel W alloy, is a high strength, high-temperature nickel-base alloy responding to age hardening heat treatments for maximum properties. 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, joining, and surface treatment. Filing Code: Ni-100. Producer or source: Huntington Alloy Products Division, An INCO Company.

UDIMET 520

Alloy Digest ◽  
1962 ◽  
Vol 11 (9) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Elevated Temperatures ◽  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Nickel Base Alloy ◽  
Nickel Base

Abstract UDIMET 520 is a nickel-base alloy recommended for applications where high strength at elevated temperatures is required. It is suitable for service at temperatures up to 1800 F. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-74. Producer or source: Special Metals Inc..

PYROTOOL EX

Alloy Digest ◽  
1972 ◽  
Vol 21 (3) ◽  
Keyword(s):  
High Temperature ◽  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Nickel Base Alloy ◽  
Extrusion Dies ◽  
Temperature Performance ◽  
Technology Corporation ◽  
Carpenter Technology Corporation ◽  
Nickel Base

Abstract PYROTOOL EX is an austenitic precipitation-hardenable nickel-base alloy with high strength in the range 1000 to 1500 F. When aged it produces a hardness of Rockwell C 40-44. Applications include high-temperature tooling, extrusion dies and dummy blocks. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-170. Producer or source: Carpenter Technology Corporation.

PYROMET 600

Alloy Digest ◽  
1969 ◽  
Vol 18 (12) ◽  
Keyword(s):  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Nuclear Industry ◽  
Temperature Performance ◽  
Resistance To Oxidation ◽  
Technology Corporation ◽  
Carpenter Technology Corporation ◽  
Nickel Base

Abstract Pyromet 600 is a corrosion-resisting nickel-base alloy, having a very desirable combination of high strength and workability, both hot and cold. It has high strength and resistance to oxidation at high temperatures. It is designed to meet the highest quality of the nuclear industry. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-149. Producer or source: Carpenter Technology Corporation.

G-E ALLOY RENE 41

Alloy Digest ◽  
1963 ◽  
Vol 12 (1) ◽  
Keyword(s):  
High Temperature ◽  
Precipitation Hardening ◽  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Nickel Base Alloy ◽  
General Electric Company ◽  
Electric Company ◽  
Temperature Performance ◽  
Nickel Base

Abstract G-E Alloy Rene 41 is a vacuum melted precipitation hardening nickel base alloy possessing high strength in the 1600-1800 F. temperature range. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Ni-47. Producer or source: General Electric Company. Originally published November 1958, revised January 1963.

INCONEL X

Alloy Digest ◽  
1953 ◽  
Vol 2 (3) ◽  
Keyword(s):  
High Temperature ◽  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Age Hardening ◽  
Chemical Corrosion ◽  
International Nickel Company ◽  
Temperature Performance ◽  
Nickel Base ◽  
Corrosion And Oxidation

Abstract INCONEL X is a high-strength, high-temperature nickel-base alloy responding to age hardening for maximum properties. It is highly resistant to chemical corrosion and oxidation. Its creep rate is low under high stresses at 1200-1500 F. 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 as well as heat treating, machining, joining, and surface treatment. Filing Code: Ni-3. Producer or source: International Nickel Company Inc..

PYROMET 88

Alloy Digest ◽  
1989 ◽  
Vol 38 (8) ◽  
Keyword(s):  
Base Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Age Hardening ◽  
Annealed Condition ◽  
Technology Corporation ◽  
Carpenter Technology Corporation ◽  
Nickel Base ◽  
Corrosion And Oxidation ◽  
Effect Of Age

Abstract PYROMET alloy 88 is an age hardenable nickel-base alloy with high strength good corrosion and oxidation resistance. It possesses low creep rate in the temperature range 1200-1500 F (650-820 C). Above 1500 F (820 C), the effect of age hardening is lost and the alloy is used in the annealed condition. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on corrosion resistance as well as forming, heat treating, and machining. Filing Code: Ni-185. Producer or source: Carpenter Technology Corporation. Originally published February 1973, revised August 1989.

Fatigue Crack Propagation Limit Curves for S690QL and S960M High Strength Steels and their Welded Joints

2018 ◽  
Vol 1146 ◽  
pp. 44-56 ◽  
Author(s):  
János Lukács ◽  
Ádám Dobosy ◽  
Marcell Gáspár
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Propagation ◽  
Crack Growth ◽  
Fatigue Crack Propagation ◽  
Welded Joints ◽  
High Strength Steels ◽  
High Strength ◽  
Base Materials ◽  
Propagation Limit

The objective of the paper is to present the newest results of our complex research work. In order to determination and comparison of the fatigue resistance, fatigue crack growth tests were performed on different grades of S690QL quenched and tempered, and S960TM thermomechanically rolled high strength steels.15 mmand30 mmthick base materials were used for our investigations. Welded joints were made from these base materials, using gas metal arc welding with matching, overmatching, and undermatching filler metals. In the paper, the performance of the welding experiments will be presented, especially with the difficulties of the filler material selection; along with the results of the fatigue crack growth examinations executed on the base materials and its welded joints. Statistical aspects were applied both for the presenting of the possible locations of the cracks in the base materials and the welded joints and for the processing of the measured data. Furthermore, the results will be compared with each other, and the possibility of derivation of fatigue crack propagation limit curves will be referred.

OS1409 Proposal of SCC Crack Growth Rate Curve for Nickel-Base Alloy Weld Metal in BWR Environments

2009 ◽  
Vol 2009 (0) ◽  
pp. 23-25
Author(s):  
Hiroshi NAGASE ◽  
Haruo FUJIMORI ◽  
Toshiyuki SAITO ◽  
Yutaka YAMAMOTO ◽  
Kenro TAKAMORI ◽  
...  
Keyword(s):  
Growth Rate ◽  
Crack Growth Rate ◽  
Weld Metal ◽  
Crack Growth ◽  
Base Alloy ◽  
Rate Curve ◽  
Nickel Base Alloy ◽  
Nickel Base ◽  
Alloy Weld
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