Study of CCLW, Alumina and the Mixture of Alumina- and CCLW-Reinforced Aluminum-Based Composite Material with and Without Mechanical Alloying

2021 ◽  
Author(s):  
Shashi Prakash Dwivedi ◽  
Manish Maurya ◽  
Shubham Sharma
Keyword(s):  
Composite Material ◽  
Mechanical Alloying

ASPECTS OF STRUCTURE FORMATION DISPERSION-STRENGTHENED METAL COMPOSITE MATERIAL OBTAINED ON THE BASIS OF SHAVINGS AND POWDER OF ALUMINUM CORROSION-RESISTANT ALLOY

2021 ◽  
pp. 39-46
Author(s):  
A.V. Gololobov ◽  
◽  
A.N. Nyafkin ◽  
A.N. Zhabin ◽  
◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Composite Material ◽  
Mechanical Alloying ◽  
Structure Formation ◽  
Metal Composite ◽  
Corrosion Resistant ◽  
Resistant Alloy ◽  
Aluminum Corrosion ◽  
Corrosion Resistant Alloy

A metal composite material (MCM) based on an aluminum corrosion-resistant alloy of the AMg6 brand, containing 22.5 % (vol.) Silicon carbide, obtained by mechanical alloying, has been investigated. Aspects of the formation of the MCM structure based on chips and powder from this alloy are considered. The influence of the initial components on the structure of the dispersion-strengthened MCM was investigated, and samples were made from this composite material.

Hydrogen Storage Properties of Magnesium Based Nanostructured/Amorphous Composite Materials

2003 ◽  
Vol 801 ◽  
Author(s):  
Ming Au
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Hydrogen Storage ◽  
Mechanical Alloying ◽  
Particle Morphology ◽  
New Materials ◽  
Nanostructured Composite ◽  
Different Temperatures ◽  
The Stability ◽  
Kinetics Of

ABSTRACTIn this work, nanostructured composite materials Mg-Ni, Mg-Ni-La, Mg-Ni-Ce and Mg-LaNi5 have been synthesized using the mechanical alloying process. The new materials produced have been investigated by X-ray diffraction (XRD), TEM, SEM and EDS for their phase compositions, crystal structure, grain size, particle morphology and the distribution of the catalyst elements. Hydrogen storage capacities and the hydriding-dehydriding kinetics of the new materials have been measured at different temperatures using a Sieverts apparatus. The results show that amorphous/nanostructured composite material Mg50%-Ni50% absorbs 5.89wt% within five minutes and desorbs 4.46% hydrogen within 50 minutes at 250°C respectively. Adding 5% La into Mg-Ni composite materials reduces the starting temperature of hydrogen absorption and desorption from 200°C to 25°C which suggests the formation of unstable hydrides. The composite material Mg80%-LaNi5 20% absorbs 1.96% hydrogen and releases 1.75 wt% hydrogen at 25°C. It is observed that mechanical alloying accelerates the hydrogenation kinetics of the magnesium based materials at low temperature, but a high temperature must be provided to release the absorbed hydrogen from the hydrided magnesium based materials. It is believed the dehydriding temperature is largely controlled by the thermodynamic configuration of magnesium hydride. Doping Mg-Ni nano/amorphous composite materials with lanthanum reduces the hydriding and dehydriding temperature. Although the stability of MgH2 can not be easily reduced by ball milling alone, the results suggest the thermodynamic properties of Mg-Ni nano/amorphous composite materials can be alternated by additives such as La or other effective elements. Further investigation toward understanding the mechanism of additives will be rewarded.

Lithiation/ Delithiation Process of Silicon-Carbon Composites Prepared by Mechanical Alloying

2015 ◽  
Vol 814 ◽  
pp. 49-53
Author(s):  
Ya Feng Ang ◽  
Xin Yi Ren ◽  
Zhen Bo Dou ◽  
Xun Yong Jiang
Keyword(s):  
Composite Material ◽  
Mechanical Alloying ◽  
Carbon Composite ◽  
Carbon Composites ◽  
Capacity Retention ◽  
Silicon Carbon ◽  
Sei Film ◽  
Carbon Composite Material ◽  
Doped Silicon ◽  
Better Than

In this study, graphite doped silicon was prepared by mechanical alloying (MA). MA is an effective method to manufacture silicon-carbon composite. The results show that the capacity retention ability of the graphite doped silicon by MA anode is better than silicon. The fellow result shows that LiaCb appears at the middle of lithiation process and disappear with the production of LixSiy, LixSiy produce and disappears at the end of lithiation process and beginning of delithiation process respectively. The SEI film enhanced with the increasing amount of lithium and silicon-carbon composite material was severely decomposed with the cycles increase.

Atomic structure of interface of intermetallic compound TiAl and nitride Ti2AIN using HREM and image processing

1991 ◽  
Vol 49 ◽  
pp. 570-571
Author(s):  
E. Sukedai ◽  
H. Mabuchi ◽  
H. Hashimoto ◽  
Y. Nakayama
Keyword(s):  
Mechanical Properties ◽  
Image Processing ◽  
Composite Material ◽  
Intermetallic Compound ◽  
Side Surface ◽  
High Resolution Electron Microscopy ◽  
Hexagonal Structure ◽  
Second Phase ◽  
Resolution Electron ◽  
Compound Tial

In order to improve the mechanical properties of an intermetal1ic compound TiAl, a composite material of TiAl involving a second phase Ti2AIN was prepared by a new combustion reaction method. It is found that Ti2AIN (hexagonal structure) is a rod shape as shown in Fig.1 and its side surface is almost parallel to the basal plane, and this composite material has distinguished strength at elevated temperature and considerable toughness at room temperature comparing with TiAl single phase material. Since the property of the interface of composite materials has strong influences to their mechanical properties, the structure of the interface of intermetallic compound and nitride on the areas corresponding to 2, 3 and 4 as shown in Fig.1 was investigated using high resolution electron microscopy and image processing.

The microstructure of a TiB2/Ti-47 Al composite material

1989 ◽  
Vol 47 ◽  
pp. 674-675
Author(s):  
O. Popoola ◽  
A.H. Heuer ◽  
P. Pirouz
Keyword(s):  
Composite Material ◽  
Ion Beam ◽  
Chemical Properties ◽  
Intermetallic Alloys ◽  
Transmission Electron ◽  
Diamond Polishing ◽  
Al Composite ◽  
The Matrix ◽  
Argon Ion ◽  
And Chemical Properties

The addition of fibres or particles (TiB2, SiC etc.) into TiAl intermetallic alloys could increase their toughness without compromising their good high temperature mechanical and chemical properties. This paper briefly discribes the microstructure developed by a TiAl/TiB2 composite material fabricated with the XD™ process and forged at 960°C.The specimens for transmission electron microscopy (TEM) were prepared in the usual way (i.e. diamond polishing and argon ion beam thinning) and examined on a JEOL 4000EX for microstucture and on a Philips 400T equipped with a SiLi detector for microanalyses.The matrix was predominantly γ (TiAl with L10 structure) and α2(TisAl with DO 19 structure) phases with various morphologies shown in figure 1.

Sign in / Sign up

Export Citation Format

Share Document