scholarly journals Mechanical and Tribological Behaviour of Artificially Aged (T6) Al-Zn-Mg-Cu Alloy

2020 ◽  
Vol 9 (3) ◽  
pp. 1988-1993
Keyword(s):  
Heat Treatment ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Aging Temperature ◽  
Cast Alloy ◽  
Intermetallic Phases ◽  
Mechanical And Tribological Properties ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition

The present work deals with the effect of aging on the mechanical and tribological properties Al-Zn-Mg-Cu (AA7068) alloy. The mechanical properties such as tensile strength, compressive strength, hardness and sliding wear of the alloy in as cast and heat treated condition were examined in order to achieve the maximum properties. Microstructural examination of the alloy in as cast and heat treated condition was carried out to observe the effect of aging. SEM study was also done to observe the worn surfaces and the mechanism of material removal. It is observed that there is a substantial improvement in the mechanical and tribological properties of the alloy due to heat treatment as compared to the as cast alloy. The microstructural study of the cast alloy shows primary dendrites of aluminium and intermetallic phases around the inter-dendrites regions. Due to the heat treatment, the identity of the dendritic structure is lost, because of uniform distribution of precipitates, wherein intermetallic phases were seen dispersed within the grains and the grain boundaries. Results show that the tensile strength of the heat treated alloy at 210oC aging temperature has increased by 155% as compared to as cast alloy. The compressive strength and hardness of the alloy at 210oC aging temperature shows improvement of 41% and 54% respectively as compared to as cast alloy. Wear loss of the heat treated alloy at 210oC aging temperature has decreased at an applied load of 20, 40, 60 and 80 N in both 1.57m/s and 3.00m/s sliding speed.

USS STRUX

Alloy Digest ◽  
1960 ◽  
Vol 9 (7) ◽  
Keyword(s):  
United States ◽  
Tensile Strength ◽  
High Strength ◽  
Notch Toughness ◽  
United States Steel Corporation ◽  
Treated Condition ◽  
High Strength Level ◽  
Heat Treated ◽  
Heat Treated Condition ◽  
Very High

Abstract USS STRUX is an alloy steel designed for use in the heat treated condition at a minimum tensile strength of 280,000 psi. At this very high strength level the steel has adequate ductility and notch toughness for critical applications. This datasheet provides information on composition and tensile properties. Filing Code: SA-100. Producer or source: United States Steel Corporation.

scholarly journals Fatigue Improvement of AlSi10Mg Fabricated by Laser-Based Powder Bed Fusion through Heat-Treatment.

2021 ◽  
Author(s):  
Felix Sajadi ◽  
Jan-Marc Tiemann ◽  
Nooshin Bandari ◽  
Ali Cheloee Darabi ◽  
Javad Mola ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Fatigue Behavior ◽  
Fatigue Properties ◽  
Powder Bed Fusion ◽  
Microstructural Characteristics ◽  
Powder Bed ◽  
Treated Condition ◽  
Heat Treated ◽  
Treatment Parameter ◽  
Heat Treated Condition

This study aims to identify an optimal heat-treatment parameter set for an additively manufactured AlSi10Mg alloy in terms of increasing the hardness and eliminating the anisotropic microstructural characteristics of the alloy in as-built condition. Furthermore, the influence of these optimized parameters on the fatigue properties of the alloy investigated. In this respect, microstructural characteristics of an AlSi10Mg alloy manufactured by Laser-Based Powder Bed Fusion in non-heat-treated and heat-treated conditions were investigated. Their static and dynamic mechanical properties were evaluated, and fatigue behavior was explained by a detailed examination of fracture surfaces. Much of the microstructure in the non-heat-treated condition was composed of columnar grains oriented parallel to the build direction. Further analysis revealed a high fraction of pro-eutectic α-Al. Through heat-treatment, the alloy was successfully brought to its peak-hardened condition, while eliminating the anisotropic microstructural features. Yield strength and ductility increased simultaneously after heat-treatment, which is due to the relief of residual stresses, preservation of refined grains, and introduction of precipitation strengthening. The fatigue strength, calculated at 10^7 cycles, improved as well after heat-treatment and finally detailed fractography reviled that a more ductile fracture mechanism has happened in the heat-treated condition compared to the non-heat-treated condition.

AISI 4337

Alloy Digest ◽  
1961 ◽  
Vol 10 (2) ◽  
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Heat Treating ◽  
Steel Mills ◽  
Treated Condition ◽  
Heat Treated ◽  
High Fatigue ◽  
Heat Treated Condition

Abstract AISI 4337 is a tough, shock resisting, oil hardening alloy steel. In the heat treated condition it has high fatigue and tensile strength along with good ductility. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-110. Producer or source: Alloy steel mills and foundries.

Properties of Electroslag Steel 5ХНМ (5HNM) and 34 ХН1М (34HN1M) Melted with "Solid" Start Using Exothermic Fluxes

2016 ◽  
Vol 15 ◽  
pp. 25-34
Author(s):  
Anatoliy F. Vlasov ◽  
Natalja A. Makarenko ◽  
Anna M. Kushchiy ◽  
Dmitry A. Volkov ◽  
Denys M. Holub
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Molten Metal ◽  
Aluminum Powder ◽  
Conductive Layer ◽  
Electrically Conductive ◽  
Exothermic Reactions ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition

The slag bath accelerated formation technological processes in the "solid" start of mono-and bifilar process schemes are worked out. The melted electroslag steel 5ХНМ (5HNM) and 34ХН1М (34HN1M) properties satisfy to the requirements that apply to the open wrought metal smelting mechanical properties. It is found that an effective way to enhance productivity is the electroslag processes exothermic flux (slag, ferroalloys, and aluminum powder in amounts sufficient to exothermic reactions) use. It is experimentally proved that an electrically conductive layer exothermic flux presence allows electroslag process, both in mono and bifilar schemes in "solid" start. The 34ХН1М (34HN1M) steel in non-heat treated condition tend to hairline cracks formation. The heat treatment provides the required mechanical properties and the hairline cracks absence in electroslag molten metal.

TIMKEN HS-220

Alloy Digest ◽  
1959 ◽  
Vol 8 (11) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Roller Bearing ◽  
High Hardness ◽  
High Strength ◽  
Heat Treating ◽  
Bend Strength ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition

Abstract HS-220 is a high strength steel designed for minimum tensile strength level of 220,000 psi in the heat treated condition. It exhibits good ductility and impact values consistent with the high hardness. This datasheet provides information on composition, hardness, tensile properties, and bend strength as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-92. Producer or source: Timken Roller Bearing Company.

FAGERSTA K825

Alloy Digest ◽  
1967 ◽  
Vol 16 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Endurance Limit ◽  
High Tensile Strength ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition

Abstract FAGERSTA K825 is a tough, shock resistant alloy steel having high tensile strength and endurance limit in the heat treated condition. It is recommended for shafts, bolts, countershafts, etc. in moderately stressed applications. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, machining, and joining. Filing Code: SA-214. Producer or source: Fagersta Steels Inc..

TIMKEN HS-260

Alloy Digest ◽  
1961 ◽  
Vol 10 (7) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
Roller Bearing ◽  
High Hardness ◽  
High Strength ◽  
Heat Treating ◽  
Temperature Performance ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition

Abstract HS-260 is a high strength steel designed for minimum tensile strength level of 260,000 psi in the heat treated condition. It exhibits good ductility and impact values consistent with the high hardness. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SA-117. Producer or source: Timken Roller Bearing Company.

scholarly journals Fatigue Improvement of AlSi10Mg Fabricated by Laser-Based Powder Bed Fusion through Heat Treatment

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 683
Author(s):  
Felix Sajadi ◽  
Jan-Marc Tiemann ◽  
Nooshin Bandari ◽  
Ali Cheloee Darabi ◽  
Javad Mola ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Fatigue Behavior ◽  
Fatigue Properties ◽  
Powder Bed Fusion ◽  
Microstructural Characteristics ◽  
Powder Bed ◽  
Treated Condition ◽  
Heat Treated ◽  
Treatment Parameter ◽  
Heat Treated Condition

This study aimed to identify an optimal heat-treatment parameter set for an additively manufactured AlSi10Mg alloy in terms of increasing the hardness and eliminating the anisotropic microstructural characteristics of the alloy in as-built condition. Furthermore, the influence of these optimized parameters on the fatigue properties of the alloy was investigated. In this respect, microstructural characteristics of an AlSi10Mg alloy manufactured by laser-based powder bed fusion in non-heat-treated and heat-treated conditions were investigated. Their static and dynamic mechanical properties were evaluated, and fatigue behavior was explained by a detailed examination of fracture surfaces. The majority of the microstructure in the non-heat-treated condition was composed of columnar grains oriented parallel to the build direction. Further analysis revealed a high fraction of pro-eutectic α-Al. Through heat treatment, the alloy was successfully brought to its peak-hardened condition, while eliminating the anisotropic microstructural features. Yield strength and ductility increased simultaneously after heat treatment, which is due to the relief of residual stresses, preservation of refined grains, and introduction of precipitation strengthening. The fatigue strength, calculated at 107 cycles, improved as well after heat treatment, and finally, detailed fractography revealed that a more ductile fracture mechanism occurred in the heat-treated condition compared to the non-heat-treated condition.

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 A96101

Alloy Digest ◽  
1988 ◽  
Vol 37 (3) ◽  
Keyword(s):  
Electrical Conductivity ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Physical Properties ◽  
High Strength ◽  
Heat Treating ◽  
High Electrical Conductivity ◽  
Treated Condition ◽  
Heat Treated ◽  
Heat Treated Condition

Abstract UNS NO. A96101 in the heat treated condition is used primarily for enclosed bus conductor where both high strength and high electrical conductivity are desirable. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Al-287. Producer or source: Various aluminum companies.

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