Author: Peng ShenPublisher:
ISBN: 9781412318761
Category : Aluminum alloys
Languages : en
Pages : 0
Book Description
The Effects of Heat Treatment on the Microstructure and Mechanical Properties of the AA2618 DC Cast Plate
Author: Peng ShenPublisher:
ISBN: 9781412318761
Category : Aluminum alloys
Languages : en
Pages : 0
Book Description
Light Metals 2013
Author: Barry SadlerPublisher: Springer
ISBN: 3319651366
Category : Technology & Engineering
Languages : en
Pages : 1276
Book Description
Effect of Heat Treatment and Iron Content on the Microstructure and Mechanical Properties of a Secondary Al-Si-Cu Alloy
Author: Inigo BacaicoaInfluence of Heat Treatment on the Microstructure and Mechanical Properties of 6061 Aluminum Alloy
Author: Publisher:
ISBN:
Category : Microstructure
Languages : en
Pages : 54
Book Description
The process of heat treatment is the method by which metals are heated and cooled in a series of specific operations that never allow the metal to reach the molten state. The purpose of the heat treatment is to cause desire changes in the metallurgical structure and thus in the properties of metal parts. The aim of this research is to study the influence of heat treatment and natural aging mechanism on the microstructure and mechanical properties of aluminum alloy 6061. The aluminum alloy 6061 sample heat treated using T4 method which is heat treated at 550°C, 575°C and 600°C and then naturally aged at ambient environment for 3 hours. After heat treated process, the effects were investigated in terms of microstructure using metallurgical analysis and mechanical properties by tensile tests and hardness test. Tensile tests show that the yield stress and UTS have high value when heat treated at 600°C where 103.28693 MPa and 195.246895 MPa meanwhile the Young modulus heat treated at 550°C have high value; 84417.95106 MPa. For heat treatment specimens, the high VHN is specimen's heat treated at 600°C which have value 85.7 and the lower VHN value is specimen's heat treated at 550°C with value 57.5. The heat treatment process result soft aluminum alloy 6061. Lastly for microstructure observation, different microstructure appear within different heat treatment temperature. From the data and result that already determined, it achieved the objectives and scope of this research.
International Aerospace Abstracts
Author: Effect of Heat Treatment on Mechanical Properties and Microstructure of Four Different Heats of ASTM A710 Steel
Author: G. E. HichoPublisher:
ISBN:
Category :
Languages : en
Pages : 58
Book Description
A710 is an high strength low alloy steel whose strength is a result of both a fine grained microstructure and a dispersion of copper precipitates. For these reasons, the tensile and impact properties of an A710 plate depend as much on the thermo-mechanical history of each plate as on the chemistry of each heat. Since plates shipped from steel suppliers are frequently heat treated under different conditions, it is difficult to attribute property differences to chemistry variations rather than to heat treatment variations or vice versa. Heat to heat property differences must be determined for a specific, known heat treatment. This report describes the variability in the mechanical properties of four plates (representing four heats of steel) that have received known, and carefully controlled, heat treatments at the National Bureau of Standards. The sensitivity of these properties to heat treatment variations within each heat of steel is also reported here. Optical and electron metallographic techniques were used to determine as-received and heat treated microstructures. Scanning electron fractography was used to ascertain the fracture mechanism in the tensile and impact tests. This report also contains two appendices in which splitting fracture and microchemistry observations in A710 are discussed. Keywords: Grain size; Age hardening; Ultra fine niobium carbon nitride; Tables(data); Charts; Photographs; Microchemistry. (Author).
Effects of Variations in Heat Treatment on the Mechanical Properties and Microstructure of ASTM A710 Grade A Class 3 Steel
Author: G. E. HitchoPublisher:
ISBN:
Category :
Languages : en
Pages : 91
Book Description
A final report assessing the effects of variations in heat treatment on the mechanical properties and microstructure of ASTM A710 grade A class 3 steel is given. The goal of this project was to evaluate the sensitivity of the mechanical properties of A710, an age hardening steel, to heat treatment variations that may occur in the production of thick plate. Tensile and impact tests were conducted on the material heat treated under the various conditions. Microstructure evaluations using optical and electron metallographic methods were conducted. Small angle neutron scattering examinations were also performed on selected specimens in order to evaluate the precipitate distribution. Results indicate that austenitization and aging time has little effect on the resultant mechanical properties. However, the mechanical properties were found to be sensitive to aging temperature. Impact results at 0 F indicate that aging at 900 F is detrimental in that the fracture surfaces of the broken impacts exhibited cleavage. Furthermore, the results suggest that welding or similar heating operations will not seriously degrade this material's properties.
Heat Treatment Effects on the Mechanical Properties and Microstructure of CPM-M4 Tool Steel
Author: Cody P. FastPublisher:
ISBN:
Category : Carbides
Languages : en
Pages : 77
Book Description
Variations in heat treatments have significant effects on the microstructure of tool steels. For CPM-M4 tool steel, the changes in microstructure and mechanical properties were observed based off of variations in temperature. Five heat treatments with constant exposure time and variable austenitizing and tempering temperatures were performed on samples of the CPM-M4. During heat treatment, tool steels undergo microstructural transformations where carbides made up of primary alloying elements are created and grown while the surrounding matrix of material undergoes phase transformations. Using SEM, EBSD, and ImageJ analysis software, the phase fractions of the final microstructure for each treatment was quantified and compared. Changes in mechanical properties were assessed by macro- hardness and nanoindentation. Based on the data, a maximum hardness was achieved for samples with an austenization temperature of 2200°F and a tempering temperature of 925°F. This highest hardness did not correspond to the highest fraction of the hardened carbide and martensite phases. This is due to interactions between both the phases present in the matrix as well as the size and distribution of the carbides.
Author: A. M. Barnes
Author: Vladimir P.Eng Neykov