Technical Paper collections have been re-named for better clarity and alignment.x

Your Selections

Casting alloys
Show Only

Collections

File Formats

Content Types

Dates

Sectors

Topics

Authors

Publishers

Affiliations

Committees

Events

Magazine

   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Assessing Thermomechanical Fatigue of a Cast Aluminum Alloy Cylinder Head of an Internal Combustion Engine

FCA US LLC-Yi Liu, Pallavi Annabattula, Seyed Mirmiran, Lin Zhang, Jim Chen, Surendra Gaikwad, Kanwerdip Singh
  • Technical Paper
  • 2020-01-1077
To be published on 2020-04-14 by SAE International in United States
Cast aluminum alloys are used for cylinder heads in internal combustion engines to meet low weight, high strength (lightweight) design requirements. In the combustion chamber, the alloy experiences harsh operating conditions; i.e., temperature variation, limitation of thermal expansion, chemical reaction, corrosion, oxidation, and chemical deposition. Under these conditions, thermomechanical fatigue (TMF) damage arises in the form of mechanical damage, environmental (oxidation) damage, and creep damage. In the present work, several important properties that influence the TMF life of the cylinder head have been identified through TMF and finite element analysis (FEA). The results show that improving the strength at high temperatures helps improve TMF life on the exhaust side of the head. On the other hand, improving strength and ductility lengthen TMF life at low temperature on the intake side. Environmental (oxidation) damage is responsible for more than 80% of the total damage on the exhaust side. On the intake side, environmental factors are again a significant contributor to overall damage, but produce a smaller portion of total damage as compared to the exhaust side.…
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.
new

Influence Of The Portevin-Le Chatelier Phenomenon On The Ultimate Tensile Strengh Limit Of Alloys Al-0.18%Zr-2%Mg And Al-0.18%Zr-6%Mg

Federal University of Pará, Augusto Corrêa Street, nº 01, Gu-Natália Luiza Abucater Brum, Aélcio de Jesus Monteiro dos Santos, Brenda Thayssa Figueira Daniel, Clóvis Iarlande Oliveira Santana, Laís Mota de Brito da Fonseca, José Maria do Vale Quaresma, Vinicius Silva dos Reis
  • Technical Paper
  • 2019-36-0301
Published 2020-01-13 by SAE International in United States
The effect of Portevin-Le Châtelier (PLC) effect and its influence on the mechanical properties of aluminum, have aroused interest in the scientific community, aiming possible applications in the industry. The respective effect has been commonly observed in the solid solution state in Al-Mg alloys. Therefore, the objective of this work is to analyze the effect of the PLC phenomenon on the mechanical properties of the material with additions of 2% and 6% of Mg in the base alloy of Al-0.18%. For this purpose, the alloys were cast in a muffle furnace and cast in copper mold (section of the properzi wheel), followed by cooling in water. Samples were cut and machined to 9.5 mm in diameter. Subsequently, they underwent sanding and polishing processes in order to obtain their macrostructures. The results obtained in this step show that Mg refined the grain structures. The tensile test was performed for mechanical characterization. The results showed that increasing Mg contents resulted in grain refining, tensile strength limit and elongation losses. In order to analyze the effect of PLC…
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

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.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

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.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

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.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

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.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

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.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

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.
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

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
This content contains downloadable datasets
Annotation ability available
   This content is not included in your SAE MOBILUS subscription, or you are not logged in.

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…
Annotation ability available