multi directional forging of commercially pure aluminum for production of ultra fine grains

13th International Conference on Aluminum Alloys

This is a collection of papers presented at the 13th International Conference on Aluminum Alloys (ICAA-13), the premier global conference for exchanging emerging knowledge on the structure and properties of aluminum materials. The papers are organized around

Enhancement of Mechanical Properties of AA 6351 Using

The Equal Channel Angular Extrusion (ECAE) process is a promising technique for imparting large plastic deformation to materials without a resultant decrease in cross-sectional area. The die consists of two channels of equal cross section intersecting at an angle

Modeling of mechanical behavior of ultra fine grained

2012/2/1Highlights Ultra fine grain materials can be produced by multiple compressions in a channel die. Commercially pure aluminum with ultra fine grains produced by this kind of process. Yield strength of the studied material estimated well by the dislocation

Superalloy

A superalloy, or high-performance alloy, is an alloy with the ability to operate at a high fraction of its melting point. Several key characteristics of a superalloy are excellent mechanical strength, resistance to thermal creep deformation, good surface stability, and resistance to corrosion or oxidation.

Catalogue of Industries for Guiding Foreign Investment

86. Fine processing of nonmetallic minerals (ultra-fine grinding, high purifying, refining, and modified performance) 87. Production of ultra-high-power graphite electrodes 88. Production of pearl mica (particle size of 3-150 μm) 89. Production of multi-dimensional

Mechanical Properties and Microstructural Evolution in Al

Mechanical properties and microstructure evolution of Al 2014 alloy subjected to cryoforging (MDF) to a cumulative strain of 1.2, 1.8, and 2.4 were investigated in the present work. The deformed samples after 4 cycles at a cumulative strain of 2.4 shows the formation of ultrafine grain sizes in the range of 100-450 nm with high-angle grain boundaries as observed from TEM analysis. The tensile

Conventional and unconventional materials used in the

Brakes are one of the most important components of vehicle. The brake system must be reliable and display unchanging action throughout its use, as it guards the health and life of many people. Properly matched friction pair, a disc and brake pad (in disc brakes), have a great impact on these factors. In most cases, the disc is made of grey cast iron. The brake pads are far more complex

Catalogue of Industries for Guiding Foreign Investment

86.Fine processing of nonmetallic minerals (ultra-fine grinding, high purifying, refining, and modified performance) 87.Production of ultra-high-power graphite electrodes 88.Production of pearl mica (particle size of 3-150 μm) 89.Production of multi-dimensional and

An investigation into the homogeneity of microstructure,

2014/2/10A commercially pure aluminum was used as the experimental alloy and the chemical composition of the alloy is given in Table 1.The optical micrograph of the alloy subjected to annealing at 500 C for 6 h is illustrated in Fig. 1 where the average grain size was ~120 m. m.

Proceedings of the 13th World Conference on Titanium

Martensitic Transformation and its Effects on Microstructural Evolution and Mechanical Properties in Electron Beam Melting of Commercially Pure Titanium and Ti‐6Al‐4V Alloy (Pages: 1289-1293) Kenta Yamanaka Manami Mori Akihiko Chiba

Formation and Microstructure of Ultrafine

2016/5/10Microstructure of the Specimens The optical micrographs of specimens with different accumulative strains during multi-directional forging are showed in Fig. 1 and 3.The initial microstructure (Σε = 0) of the specimen is uniformly sized polygonal deformation twins with grains size about 25 μm, as shown in Fig. 1..

Modeling of microstructure and mechanical behavior of

2011/9/1The material used was 1 mm thick commercially pure aluminum (AA1100) sheet, the chemical composition of which is shown in Table 1. From this sheet, samples with dimensions 200 mm 30 mm 1 mm were cut and used for the subsequent processing.

Proceedings of the 13th World Conference on Titanium

Martensitic Transformation and its Effects on Microstructural Evolution and Mechanical Properties in Electron Beam Melting of Commercially Pure Titanium and Ti‐6Al‐4V Alloy (Pages: 1289-1293) Kenta Yamanaka Manami Mori Akihiko Chiba

Effects of combined multiaxial forging and rolling process

2019/2/27Multi axial forging (MAF) is one of the simplest severe plastic deformation techniques which involves repeated compression in three orthogonal directions sequentially [8, 9]. It does not require any specialized tool/equipment to achieve large strains and allows scaling up of bulk ultrafine grained products with minimum distraction from its original shape.

US Patent, Patent Application and Patent Search

Subsequently, a cold or warm multi-directional rolling process with more than 50% thickness reduction can be used to break up any nonuniform casting microstructure. Then final anneal is done at 550 to 600 degrees C. in a protective atmosphere for 15 to 30 minutes.

Special Section: Exothermic and Non‐Isothermal Processing

Boron nitride nanotube and aluminum sandwich composites are fabricated by a multi‐step process comprising of nanotube dispersion, hot pressing, and roll bonding. An extremely low BNNT fraction of less than 0.05 wt% is used to achieve superior hardness, elasticity, and tensile strength.

US Patent Application for ALUMINUM BASED

The matrix can consist of a polycrystalline grain structure in which the grains can be nanocrystalline (i.e., on the order or 1, 10 or 100 nm) or ultra-fine (being defined as a length scale between 100 and 1000 nm) or can be even larger i.e. length scales of greater

Ultrafine Grain

Abstract: Tension-tension fatigue tests were conducted using ultrafine-grained commercially pure Titanium (Ti) plates fabricated by multi-directional forging (MDFing). The MDFed pure Ti plates with the thickness of 1 mm were developed aiming at dental implant application.

Mechanical properties and biological responses of ultrafine

2019/6/1We aimed to investigate strengthening of pure titanium by ultra-grain refinement using multi-directional forging and to examine the biocompatibility after sulfuric acid treatment. Commercial titanium grade 2 was multi-directional forged to large cumulative

Review on modified and novel techniques of severe plastic

Miura H, Yang X, Sakai T. Evolution of ultra-fine grains in AZ31 and AZ61 Mg alloys during multi directional forging and their properties. Mater Trans, 2008, 49(5): 1015–1020 Article Google Scholar 64 Zheng L J, Li H X, Hashmi M F, et al. Evolution of

The Latest Mendeley Data Datasets for Materials Science

The results showed that the fatigue limit of pure Zr treated by ultrasonic shot peening (USSP) for 45 min was up to 11.2% higher than that of the original pure Zr. Both the initiation life and propagation life of fatigue cracks could be increased after USSP treatment.

Effects of combined multiaxial forging and rolling process

2019/2/27Multi axial forging (MAF) is one of the simplest severe plastic deformation techniques which involves repeated compression in three orthogonal directions sequentially [8, 9]. It does not require any specialized tool/equipment to achieve large strains and allows scaling up of bulk ultrafine grained products with minimum distraction from its original shape.

Microstructure and mechanical properties of commercially

2013/11/1Accumulative back extrusion (ABE), as a new severe plastic deformation (SPD) method, was applied on a commercially pure aluminum, resulting in an ultrafine microstructure. The grain refinement was attributed to the shearing and/or to the mechanical partitioning of the initial coarse grains as well as different dynamic recrystallization mechanisms (i.e., discontinues and continues ones).

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