Micromechanical Modeling of Precipitation Hardened NiTiHf

2018 ◽  
Vol 915 ◽  
pp. 147-156
Author(s):  
Jobin K. Joy ◽  
Alexandros Solomou ◽  
Theocharis Baxevanis ◽  
Ibrahim Karaman ◽  
Dimitris C. Lagoudas
Keyword(s):  
High Temperature ◽  
Precipitation Hardening ◽  
Structural Effect ◽  
Micromechanical Modeling ◽  
Composition Distribution ◽  
Mechanical Responses ◽  
Novel Approach ◽  
Suitable Heat Treatment ◽  
Heat Treated ◽  
Elemental Depletion

Actuation response of NiTiHf high temperature SMAs can be enhanced by means of suitable heat treatment on the material through precipitation hardening. Heat treatments can be chosen carefully to improve the performance of the NiTiHf SMAs in order to meet the requirements of targeted applications to design more robust and efficient high temperature solid-state actuator systems. The present work aims to develop a novel approach to model and predict the behavior of heat-treated NiTiHf SMAs. The predictions of the thermomechanical response of NiTiHf SMAs are based on Representative Volume Elements (RVEs). The precipitated NiTiHf SMA is modeled as a composite consist of of thermo-elastic non-transforming precipitates and a polycrystalline SMA matrix. The structural effect of precipitates and the effect of Hf-concentration gradient resulted from Hf depletion during precipitation are included. The composition distribution resulting from the elemental depletion and the transformation temperature distributions in the SMA matrix are related. In the present work, these relations are developed from experimental measurements on several NiTiHf compositions. Thermo-mechanical responses of Ni50.3Ti29.7Hf20heat-treated at 500°C for 48h at different loading conditions are predicted and the correlations with experimental results demonstrate the validity of the proposed framework.

UDIMET 41

Alloy Digest ◽  
1964 ◽  
Vol 13 (6) ◽  
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Physical Properties ◽  
Precipitation Hardening ◽  
Base Alloy ◽  
Heat Treating ◽  
Nickel Base Alloy ◽  
Temperature Performance ◽  
Nickel Base ◽  
Corrosion And Oxidation

Abstract UDIMET 41 is a vacuum induction melted precipitation hardening nickel-base alloy having outstanding room and elevated temperature properties. It possesses excellent corrosion and oxidation resistance. It is designed for highly stressed components operating in the 1400-1700 deg F temperature range. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on low and high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Ni-92. Producer or source: Special Metals Inc..

ALLVAC 80A

Alloy Digest ◽  
1990 ◽  
Vol 39 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Precipitation Hardening ◽  
Heat Treating ◽  
Temperature Performance

Abstract ALLVAC 80A is an 80% Ni/20% Cr alloy which is strengthened by precipitation hardening through the addition of Ti and A1. It is produced by vacuum induction plus vacuum are remelting. This datasheet provides information on composition, physical properties, 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, and joining. Filing Code: Ni-379. Producer or source: Allvac Inc..

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.

CM-R 411

Alloy Digest ◽  
1967 ◽  
Vol 16 (9) ◽  
Keyword(s):  
Shear Strength ◽  
High Temperature ◽  
Gas Turbine ◽  
Precipitation Hardening ◽  
Base Alloy ◽  
Heat Treating ◽  
Nickel Base Alloy ◽  
Jet Engine ◽  
Temperature Performance ◽  
Nickel Base

Abstract CM-R41 is a vacuum-melted, precipitation hardening nickel-base alloy possessing outstanding properties in the temperature range of 1200 F to 1800 F. It is recommended for jet engine and gas turbine components operating at high temperatures. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and shear strength as well as creep. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Ni-127. Producer or source: Cannon-Muskegon 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.

AL 15-7 PRECIPITATION HARDENING ALLOY

Alloy Digest ◽  
1988 ◽  
Vol 37 (6) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Austenitic Stainless Steel ◽  
Physical Properties ◽  
Precipitation Hardening ◽  
High Strength ◽  
Heat Treating ◽  
Vacuum Arc ◽  
Temperature Performance

Abstract Allegheny Ludlum AL 15-7 Alloy is a chromium-nickel-molybdenum-aluminum semi-austenitic stainless steel. It is heat treatable to high strength and it has a moderate level of corrosion resistance. It is available both as a conventionally melted product and as vacuum arc or electroslag refined material. 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: SS-496. Producer or source: Allegheny Ludlum Corporation.

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.

G-E ALLOY J-1300

Alloy Digest ◽  
1959 ◽  
Vol 8 (1) ◽  
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Precipitation Hardening ◽  
Base Alloy ◽  
Weight Ratio ◽  
Heat Treating ◽  
General Electric Company ◽  
Iron Base Alloy ◽  
Electric Company ◽  
Temperature Performance

Abstract G-E ALLOY J-1300 is a precipitation hardening iron-base alloy with an excellent strength to weight ratio. It is recommended for applications in the 1350 F. range. This datasheet provides information on composition, physical properties, elasticity, 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: SS-83. Producer or source: General Electric Company.

LUCEFIN GROUP C45U (1.1730)

Alloy Digest ◽  
2020 ◽  
Vol 69 (1) ◽  
Keyword(s):  
High Temperature ◽  
Cold Work ◽  
Hard Case ◽  
Medium Carbon ◽  
Hardened Zone ◽  
Temperature Performance ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition ◽  
Cold Work Tool Steel

Abstract Lucefin Group C45U is a medium-carbon, non-alloy cold-work tool steel. It is primarily used in the non-heat-treated condition. For special applications it is used in the quenched and tempered condition. Owing to its low hardenability, C45U develops a fully hardened zone that is relatively thin, even when quenched drastically. Thicker sections have a hard case over a tough core. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming and joining. Filing Code: TS-784. Producer or source: Lucefin S.p.A.

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