Forgings, Titanium Alloys Heat-Treated, Finished-Part Properties: Short-Transverse Tensile, Fracture Toughness, and Longitudinal Time-Dependent-Tension

Additive manufacturing (AM) has shown the ability in processing titanium alloys. However, due to the unique thermal history in AM, the microstructure of AM-fabricated parts is metastable and non-equilibrium. This work was aiming to tailor the microstructure and to improve the mechanical properties of α+β Ti-6Al-4V alloy and metastable β Ti-5Al-5Mo-5V-1Cr-1Fe alloys by manipulating the post-process heat treatment. The results showed that Ti-6Al-4V exhibited a metastable α’ martensite microstructure in the as-fabricated condition, while a metastable β structure was formed in as-printed Ti-5Al-5Mo-5V-1Cr-1Fe. After post-process heat treatment, both lamellar and bimodal microstructures were obtained in Ti64 and Ti-5Al-5Mo-5V-1Cr-1Fe alloys. Especially, the Ti-6Al-4V alloy subjected to 950 °C annealing showed the lamellar structure with the highest fracture toughness of 90.8 ± 2.1 MPa.m1/2. The one cyclically heat-treated has excellent combined strength, ductility and fracture toughness attributed to the bimodal structure. In addition, similar observations of lamellar and bimodal microstructure appeared in the post-process heat-treated Ti-5Al-5Mo-5V-1Cr-1Fe alloy. This study demonstrated that heat treatment is an effective way to tackle the non-equilibrium microstructure and improve the mechanical properties of selective laser melting (SLM)-fabricated titanium alloys.

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UNS A03560

Alloy Digest ◽

10.31399/asm.ad.al0274 ◽

1986 ◽

Vol 35 (12) ◽

Keyword(s):

Fracture Toughness ◽

Corrosion Resistance ◽

High Strength ◽

Heat Treating ◽

Casting Alloy ◽

Aluminum Casting ◽

Good Resistance ◽

Aluminum Casting Alloy ◽

Temperature Performance ◽

Heat Treated

Abstract UNS No. A03560 is a heat-treatable aluminum casting alloy. Normally it is used only when heat-treated (aged) strengths are required. It is recommended for high-strength, pressure-tight castings, intricate shapes and where good resistance to corrosion is needed. Its many applications include crank cases, gear cases, oil pans, airframe fittings and instrument housings. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-274. Producer or source: Various aluminum companies.

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FEDERATED F401.5Ni

Alloy Digest ◽

10.31399/asm.ad.al0212 ◽

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..

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UNS A02080

Alloy Digest ◽

10.31399/asm.ad.al0286 ◽

1988 ◽

Vol 37 (1) ◽

Keyword(s):

Fracture Toughness ◽

Corrosion Resistance ◽

Shear Strength ◽

Physical Properties ◽

Tensile Properties ◽

Heat Treating ◽

General Purpose ◽

Sand Casting ◽

Casting Alloy ◽

Heat Treated

Abstract UNS No. A02080 is a heat-treatable casting alloy characterized by good castability, machinability and resistance to corrosion. It is produced by sand casting and is a general-purpose alloy recommended in both the as-cast and heat-treated conditions. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-286. Producer or source: Various aluminum companies.

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