Controlled Interfacial Reactions and Superior Mechanical Properties of High Energy Ball Milled/Spark Plasma Sintered Ti‐6Al‐4V‐Graphene Composite

2021 ◽  
Author(s):  
Yue Zhou ◽  
Longlong Dong ◽  
Qinghao Yang ◽  
Wangtu Huo ◽  
Yongqing Fu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Energy ◽  
Interfacial Reactions ◽  
Graphene Composite ◽  
Spark Plasma ◽  
Superior Mechanical Properties ◽  
Energy Ball

Al-Fe Chips Processed by High-Energy Ball Milling and Spark Plasma Sintering

2017 ◽  
Vol 270 ◽  
pp. 197-204 ◽  
Author(s):  
Vojtěch Kučera ◽  
Filip Průša ◽  
Dalibor Vojtěch
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Ball Milling ◽  
Spark Plasma Sintering ◽  
Iron Content ◽  
Aluminium Alloys ◽  
High Energy ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Energy Ball

Typically, conventional casting technologies are employed to manufacture aluminium alloys from scrap, but during recycling iron accumulates and increases in content. Increased iron content in such alloys reduces their mechanical properties. Because powder metallurgy is able to prepare materials with a very fine microstructure, we investigated its use for the preparation of aluminium alloys with a high iron content and the required mechanical properties. We prepared an Al-Fe17 (wt. %) binary alloy using combination of mechanical working (MW), high-energy ball milling (HEBM) and spark plasma sintering (SPS). The thus-prepared samples were analyzed (XRD, XRF, SEM-EDS, compression stress-strain test) and compared to the commercially-available alloy Al-Si12-Cu1-Mg1-Ni1, which is thermally stable. While the MW followed by SPS sample showed improved plastic deformation, the combination of MW, HEBM and SPS led to the absence of plastic deformation at room temperature. However, the MW+HEBM+SPS had much higher strength (579 MPa) and possessed similar thermal stability as the commercial Al-Si12-Cu1-Mg1-Ni1.

scholarly journals Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications

Crystals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1317
Author(s):  
Amanendra K. Kushwaha ◽  
Merbin John ◽  
Manoranjan Misra ◽  
Pradeep L. Menezes
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Chemical Vapor ◽  
Chemical Precipitation ◽  
High Energy ◽  
Synthesis Methods ◽  
Materials Synthesis ◽  
Current State ◽  
Superior Mechanical Properties ◽  
Energy Ball

Nanostructuring is a commonly employed method of obtaining superior mechanical properties in metals and alloys. Compared to conventional polycrystalline counterparts, nanostructuring can provide remarkable improvements in yield strength, toughness, fatigue life, corrosion resistance, and hardness, which is attributed to the nano grain size. In this review paper, the current state-of-the-art of synthesis methods of nanocrystalline (NC) materials such as rapid solidification, chemical precipitation, chemical vapor deposition, and mechanical alloying, including high-energy ball milling (HEBM) and cryomilling was elucidated. More specifically, the effect of various process parameters on mechanical properties and microstructural features were explained for a broad range of engineering materials. This study also explains the mechanism of grain strengthening using the Hall-Petch relation and illustrates the effects of post-processing on the grain size and subsequently their properties. This review also reports the applications, challenges, and future scope for the NC materials.

Effect of High-Energy Ball-Milling and TiB2 Content on Microstructures and Properties of Cu-TiB2 Composites Sintered by SPS

2006 ◽  
Vol 118 ◽  
pp. 661-665 ◽  
Author(s):  
Dae Hwan Kwon ◽  
Thuy Dang Nguyen ◽  
Pyuck Pa Choi ◽  
Ji Soon Kim ◽  
Young Soon Kwon
Keyword(s):  
Electrical Conductivity ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Energy Ball ◽  
Xrd Patterns ◽  
Short Time ◽  
Tib2 Particles

The microstructure and properties of Cu-TiB2 composites produced by high-energy ball-milling of TiB2 powders and spark-plasma sintering (SPS) were investigated. TiB2 powders were mechanically milled at a rotation speed of 1000rpm for short time in Ar atmosphere, using a planetary ball mill. To produce Cu-xTiB2 composites( x = 2.5, 5, 7.5 and 10wt.% ), the raw and milled TiB2 powders were mixed with Cu powders by means of a turbular mixer, respectively. Sintering of mixed powders was carried out in a SPS facility under vacuum. High-energy ball-milling resulted in refinement of TiB2 particles. XRD patterns of milled TiB2 powders indicated broader TiB2 peaks with decreased intensities. After sintering at 950 for 5min using the raw and milled TiB2 mixture powders, the sintered density decreased with increasing TiB2 content regardless of milling of TiB2. In the case of raw TiB2, hardness rapidly increased from 4 to 44 HRB with increasing TiB2 content. The electrical conductivity changed from 95.5 to 80.7 %IACS. For mixtures of Cu powders with milled TiB2 powders, hardness increased from 38 to 67 HRB as TiB2 content increased, while the electrical conductivity varied from 88% to 51 % IACS. When compared to compacts sintered with raw and milled TiB2 powders, the electrical conductivity of specimens with raw TiB2 powder was higher than that of specimens with milled TiB2 powder, while hardness was slightly lower.

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