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Trace Element Control Nickel Alloy Castings

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS2280D
  • Current
Published 2019-11-05 by SAE International in United States
This specification establishes testing methods and maximum permissible limits for trace elements in nickel alloy castings.
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Magnesium Alloy, Sand Castings 4.0Y - 2.3Nd - 0.7Zr (WE43B - T6) Solution and Precipitation Heat Treated

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4427D
  • Current
Published 2019-08-28 by SAE International in United States
This specification covers a magnesium alloy in the form of sand castings.
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Magnesium Alloy, Sand Castings 2.8Nd - 1.4Gd - 0.4Zn - 0.6Zr (EV31A - T6) Solution and Precipitation Heat Treated

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4429B
  • Current
Published 2019-08-01 by SAE International in United States
This specification covers a magnesium alloy in the form of sand castings.
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Castings, Aluminum Alloy Sand 5.0Si - 1.2Cu - 0.50Mg (355.0-T71) Solution Heat Treated and Overaged

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4214K
  • Current
Published 2019-07-12 by SAE International in United States
This specification covers an aluminum alloy in the form of sand castings.
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Heat Treatment of Parts in a Vacuum

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS2769C
  • Current
Published 2019-07-12 by SAE International in United States
This specification establishes the requirements and procedures for heat treating parts in vacuum/partial pressure and shall be used as a supplementary document to primary heat treating specifications as applicable.
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Minimizing Stress-Corrosion Cracking in Wrought High-Strength Aluminum Alloy Products

AMS D Nonferrous Alloys Committee
  • Aerospace Standard
  • ARP823F
  • Current
Published 2019-04-17 by SAE International in United States
The purpose of this recommended practice is to provide the aerospace industry with recommendations concerning minimizing stress-corrosion cracking (SCC) in wrought high-strength aluminum alloy products.
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Heat Treatment of Wrought Aluminum Alloy Parts

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS2770P
  • Current
Published 2019-04-08 by SAE International in United States
This specification specifies the engineering requirements for heat treatment, by part fabricators (users) or their vendors or subcontractors, of parts (see 8.6.1). It also covers heat treatment by warehouses or distributors converting raw material from one temper to another temper (see 1.3 and 8.5). It covers the following aluminum alloys: 1100, 2014, 2017, 2024, 2098, 2117, 2124, 2195, 2219, 2224, 3003, 5052, 6013, 6061, 6063, 6066, 6951, 7049, 7050, 7075, 7149, 7178, 7249, 7475
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Constitutive Modeling and Thermomechanical Fatigue Life Predictions of A356-T6 Aluminum Cylinder Heads Considering Ageing Effects

ADACS Inc.-Radwan Hazime
General Motors LLC-Cherng-Chi Chang, Chao Hu
Published 2019-04-02 by SAE International in United States
Cast aluminum alloys are frequently used as materials for cylinder head applications in internal combustion gasoline engines. These components must withstand severe cyclic mechanical and thermal loads throughout their lifetime. Reliable computational methods allow for accurate estimation of stresses, strains, and temperature fields and lead to more realistic Thermomechanical Fatigue (TMF) lifetime predictions. With accurate numerical methods, the components could be optimized via computer simulations and the number of required bench tests could be reduced significantly. These types of alloys are normally optimized for peak hardness from a quenched state that maximizes the strength of the material. However due to high temperature exposure, in service or under test conditions, the material would experience an over-ageing effect that leads to a significant reduction in the strength of the material. To numerically account for ageing effects, the Shercliff & Ashby ageing model is combined with a Chaboche-type viscoplasticity model available in the finite-element program ABAQUS by defining field variables. The constitutive model with ageing effects is correlated with uniaxial cyclic isothermal tests in the T6 state, the…
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Nickel Alloy, Corrosion and Heat-Resistant, Powder for Additive Manufacturing, 47.5Ni - 22Cr - 1.5Co - 9.0Mo - 0.60W - 18.5Fe

AMS AM Additive Manufacturing Metals
  • Aerospace Material Specification
  • AMS7008
  • Current
Published 2019-03-26 by SAE International in United States
This specification covers a corrosion and heat-resistant nickel alloy in the form of pre-alloyed powder.
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Prediction of Secondary Dendrite Arm Spacing in Directional Solidification of Aluminum Alloy by Casting Simulation and Micro-Structural Inspection

General Motors Global Propulsion System-Pankaj Jha, Michael Nienhuis
General Motors Technical Center India-Nilankan Karmakar, Sudipto Ray, Neeraj Carpenter, Akshay A., Virupakshappa Lakkonavar
Published 2019-01-09 by SAE International in United States
In automotive industry, many of the powertrain components (for e.g. engine head and cylinder block) are generally manufactured by a casting procedure. Secondary Dendrite Arm Spacing (SDAS) is one of the most important microstructural features in dendritic solidification of alloys (for e.g. Al-Si alloys) during the casting process. SDAS has a significant influence on the mechanical behavior of the cast aluminum components. A lower value of SDAS is desired in order to achieve better fatigue strength of the cast components which can be controlled by governing several casting parameters. For directional solidification, SDAS is dependent on various casting parameters i.e. chemical composition of the alloy, cooling rate and liquid melt treatment. During industrial casting of an alloy with predefined chemical composition, cooling rate during the mushy zone becomes the dominant parameter for controlling SDAS. The objective of this study was to predict the SDAS of die cast Al-Si alloy samples subjected to different cooling rates by varying the mold temperature. The SDAS was predicted by a casting simulation and utilizing the empirical relationship between solidification…
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