Effect of Crystallographic Orientation on The Fracture Toughness of NiAl Single Crystals

1994 ◽  
Vol 364 ◽  
Author(s):  
S. Shrivastava ◽  
F. Ebrahimi
Keyword(s):  
Fracture Toughness ◽  
Single Crystals ◽  
Heat Treating ◽  
Sem Analysis ◽  
Internal Stresses ◽  
Electric Discharge Machine ◽  
Notched Specimens ◽  
Heat Treated ◽  
Before And After ◽  
Discharge Machine

AbstractIn the present study, single-edge notched bend specimens of NiAl single crystals were tested in {100}<010>, {101}<101=, and {101}<010} orientations before and after heat-treating the notched specimens at 1000°C for one hour. The fracture toughness data for the non heat-treated specimens were found to be consistent with the previous results. An increase in the fracture toughness of NiAl was observed in all orientations studied upon heat-treating the notched specimens. The toughness ratio for the two orientations obtained from the heat-treated notched specimens was found to be 1.2. This ratio is in agreement with the reported stress analysis considering the crack kinking in {100} oriented specimens. A detailed SEM analysis revealed that the electric discharge machine (EDM) cutting of the notch caused the formation of sharp microcracks at the notch front and also created internal stresses in the vicinity of the notch. The increase in toughness upon heat treatment is attributed to the modification of EDM damage.

UNS A03560

Alloy Digest ◽  
1986 ◽  
Vol 35 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Strength ◽  
Heat Treating ◽  
Casting Alloy ◽  
Aluminum Casting ◽  
Good Resistance ◽  
Aluminum Casting Alloy ◽  
Temperature Performance ◽  
Heat Treated

Abstract UNS No. A03560 is a heat-treatable aluminum casting alloy. Normally it is used only when heat-treated (aged) strengths are required. It is recommended for high-strength, pressure-tight castings, intricate shapes and where good resistance to corrosion is needed. Its many applications include crank cases, gear cases, oil pans, airframe fittings and instrument housings. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-274. Producer or source: Various aluminum companies.

FEDERATED F401.5Ni

Alloy Digest ◽  
1974 ◽  
Vol 23 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Elevated Temperatures ◽  
High Strength ◽  
Heat Treating ◽  
Casting Alloy ◽  
Aluminum Casting ◽  
Aluminum Casting Alloy ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition

Abstract FEDERATED F401.5Ni is a heat-treatable aluminum casting alloy with high strength and good wear resistance in the fully heat-treated condition. It is recommended for castings requiring good strength at elevated temperatures. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-212. Producer or source: Federated Metals Corporation, ASARCO Inc..

UNS A02080

Alloy Digest ◽  
1988 ◽  
Vol 37 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
General Purpose ◽  
Sand Casting ◽  
Casting Alloy ◽  
Heat Treated

Abstract UNS No. A02080 is a heat-treatable casting alloy characterized by good castability, machinability and resistance to corrosion. It is produced by sand casting and is a general-purpose alloy recommended in both the as-cast and heat-treated conditions. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-286. Producer or source: Various aluminum companies.

CARPENTER Ti 6Al-4V

Alloy Digest ◽  
2002 ◽  
Vol 51 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Heat Treating ◽  
Bearing Strength ◽  
Aerospace Applications ◽  
Temperature Performance ◽  
Beta Alloy ◽  
Heat Treated ◽  
Technology Corporation ◽  
Alpha Beta ◽  
Carpenter Technology Corporation

Abstract Carpenter titanium alloy 6Al-4V is an alpha-beta alloy that contains alpha and beta stabilizers and can be heat treated. This alloy accounts for more than 50% of total titanium usage, mostly in aerospace applications. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and compressive, shear, and bearing strength as well as fracture toughness 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: TI-60. Producer or source: Carpenter Technology Corporation. Originally published as Carpenter Titanium 6-4, October 1970, revised August 2002.

UNS G61200

Alloy Digest ◽  
1991 ◽  
Vol 40 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Temperature ◽  
Heat Treating ◽  
Case Hardening ◽  
Steel Mills ◽  
Temperature Performance ◽  
Treated Condition ◽  
Heat Treated ◽  
High Fatigue ◽  
Heat Treated Condition

Abstract UNS G62100 is a tough, shock resisting, case-hardening chromium-vanadium steel. It has high fatigue resistance in the heat treated condition. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low and high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-458. Producer or source: Alloy steel mills and foundries.

ELASTUF 44

Alloy Digest ◽  
1958 ◽  
Vol 7 (7) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Electric Furnace ◽  
Heat Treating ◽  
Molybdenum Alloy ◽  
Special Analysis ◽  
Heat Treated ◽  
Steel Heat

Abstract ELASTUF 44 is a special analysis, electric furnace chromium, nickel, molybdenum alloy steel heat treated to Rockwell C42-46, and machinable. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on heat treating and machining. Filing Code: SA-72. Producer or source: Brown-Wales Company.

EXOCUT

Alloy Digest ◽  
1973 ◽  
Vol 22 (11) ◽  
Keyword(s):  
Fracture Toughness ◽  
Surface Treatment ◽  
Tool Steel ◽  
High Speed ◽  
Heat Treating ◽  
Heat Treated

Abstract EXOCUT is a super high-speed tool steel capable of being heat treated to Rockwell C 70. It is well suited for machining hard and difficult-to-machine materials. This datasheet provides information on composition, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-265. Producer or source: Allegheny Ludlum Corporation.

AISI 9840

Alloy Digest ◽  
1957 ◽  
Vol 6 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Heat Treating ◽  
Good Combination ◽  
Nickel Chromium ◽  
Steel Mills ◽  
Treated Condition ◽  
Heat Treated ◽  
Molybdenum Steel ◽  
Heat Treated Condition ◽  
Lower Nickel

Abstract AISI 9840 is a nickel-chromium-molybdenum steel very similar to AISI 4340 with lower nickel and slightly higher manganese. In the heat treated condition it has good combination of strength, fatigue resistance, toughness and wear resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-55. Producer or source: Alloy steel mills and foundries.

TATMO V

Alloy Digest ◽  
1985 ◽  
Vol 34 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
High Speed ◽  
Heat Treating ◽  
Steel Company ◽  
Treated Steel ◽  
Heat Treated ◽  
Red Hardness ◽  
Edge Toughness ◽  
Heat Treated Steel

Abstract TATMO-V is a high-speed tool steel with superior abrasion resistance because of its high contents of carbon and vanadium. It is an excellent choice for premium grade tools which require an outstanding balance of red hardness, edge toughness, and wear resistance. Increased tool life of Tatmo-V is noted in the machining of semi-hard, heat-treated steel pats (300-350 Brinell). This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: TS-434. Producer or source: Latrobe Steel Company.

MAXEL 3 1/2

Alloy Digest ◽  
1971 ◽  
Vol 20 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Brinell Hardness ◽  
Heat Treating ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition ◽  
Specialty Metals

Abstract MAXEL 3 1/2 is a free-machining alloy steel that provides an outstanding combination of heat-treated properties and superior machinability. It can be supplied in the heat-treated condition at 262-311 Brinell hardness. See also MAX-EL 3 1/2, Alloy Digest SA-45, July 1956. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as heat treating, machining, joining, and surface treatment. Filing Code: SA-262. Producer or source: Crucible Specialty Metals Division, Colt Industries.

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