Microstructure and mechanical properties of fine-grained boron carbide ceramics fabricated by high-pressure hot pressing combined with high-energy ball milling

2018 ◽  
Vol 44 (9) ◽  
pp. 10766-10772 ◽  
Author(s):  
Xiaorong Zhang ◽  
Zhixiao Zhang ◽  
Bin Nie ◽  
Huanyu Chen ◽  
Yanming Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Boron Carbide ◽  
Ball Milling ◽  
Hot Pressing ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Fine Grained ◽  
Energy Ball ◽  
Carbide Ceramics

Ultrafine-grained boron carbide ceramics fabricated via ultrafast sintering assisted by high-energy ball milling

2018 ◽  
Vol 44 (6) ◽  
pp. 7291-7295 ◽  
Author(s):  
Xiaorong Zhang ◽  
Zhixiao Zhang ◽  
Bin Nie ◽  
Huanyu Chen ◽  
Guangshuo Wang ◽  
...  
Keyword(s):  
Boron Carbide ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Ultrafine Grained ◽  
Energy Ball ◽  
Carbide Ceramics

High Strength Bulk Nanostructured 2219 Al Alloy Produced by High Energy Ball Milling and Hot Pressing

2008 ◽  
Vol 584-586 ◽  
pp. 97-101 ◽  
Author(s):  
T. Shanmugasundaram ◽  
V. Subramanya Sarma ◽  
B.S. Murty ◽  
Martin Heilmaier
Keyword(s):  
Mechanical Properties ◽  
Ball Milling ◽  
Hot Pressing ◽  
Xrd Analysis ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Coarse Grained ◽  
Nanocrystalline Powders ◽  
Al Alloy ◽  
Energy Ball

The microstructure and mechanical properties of nano-crystalline 2219 Al alloy (Al-6.4Cu-0.29Mn, all in wt %) was studied. Nanocrystalline powders were produced from gas atomized 2219 Al alloy powders by high energy ball milling at room temperature. Powders were collected at different milling times and X-ray diffraction (XRD) analysis was used to evaluate grain size. High Vickers hardness (250HV), high compressive strength (920 MPa) and low ductility (2%) were observed in unimodal bulk nanostructured 2219 Al alloys consolidated to 99% density by hot pressing (HP). In addition, these nanocrystalline powders were blended with 15, 30 and 50% of (gas atomized) coarse-grained powders to obtain balanced mechanical properties of enhanced yield and ultimate strength and reasonable ductility and toughness as compared to either conventional or nanocrystalline 2219 alloys.

Microstructures and Mechanical Properties of TiAl-Based Alloys Prepared by High-Energy Ball Milling and Hot-Pressing Sintering

2011 ◽  
Vol 704-705 ◽  
pp. 828-831
Author(s):  
Tian Guo Wang ◽  
Qun Qin ◽  
Qiu Yue Shi ◽  
Wen Jun Zhang
Keyword(s):  
Mechanical Properties ◽  
Ball Milling ◽  
Hot Pressing ◽  
Room Temperature ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Uniform Microstructure ◽  
Energy Ball ◽  
Hot Pressing Sintering ◽  
The Relationship

TiAl-based alloy with a composition of Ti-47%Al-3%Cr (mole fraction) was prepared by high-energy ball milling and hot-pressing sintering. The relationship between microstructure and mechanical properties of Ti-47%Al-3%Cr alloy was studied by X-ray diffractometry (XRD), scanning electron microscopy (SEM) and mechanical testing. The results showed that the TiAl-based alloy with high density and uniform microstructure could be obtained by high-energy ball milling and hot-pressing sintering. The compactibility and sintering densification of the element powder could be promoted efficiently by high-energy ball milling. The main phase TiAl and few phases Ti3Al were observed in the hot pressing sintering bulk samples. In addition, the microstructure changed with ball milling times, as a result, the mechanical properties changed with the microstructure. The finer the microstructure was, the higher the strength at room temperature became. After the element powder was milled for 20 hours and hot-pressing sintered at 1300 °C for 2 hours, TiAl-based alloys were found to have good room temperature mechanical properties with the compressive strength of 2870 Mpa and the relative compressive ratio of 27.3%. Keywords: TiAl-based alloys; hot-pressing sintering; microstructure; mechanical properties

scholarly journals Quenching ilmenite with a high-temperature and high-pressure phase using super-high-energy ball milling

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Takeshi Hashishin ◽  
Zhenquan Tan ◽  
Kazuhiro Yamamoto ◽  
Nan Qiu ◽  
Jungeum Kim ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Ball Milling ◽  
High Energy ◽  
High Energy Ball Milling ◽  
High Pressure Phase ◽  
Energy Ball ◽  
Pressure Phase

Carbon Nanotubes Reinforced Aluminum Matrix Composites by High-Energy Ball Milling

2010 ◽  
Vol 150-151 ◽  
pp. 1163-1166 ◽  
Author(s):  
Xiao Fei Wang ◽  
Xiao Lan Cai
Keyword(s):  
Mechanical Properties ◽  
Ball Milling ◽  
Milling Time ◽  
Aluminum Matrix ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Energy Ball ◽  
Rotary Speed

CNT-reinforced aluminum matrix composites was produced by high-energy ball milling, the effect of rotary speed and milling time on the particle size distribution,the density and hardness of CNT-aluminum matrix composites were studied,it was observed that the rotary speed and milling time have an important effect on the mechanical properties of the CNT-aluminum matrix composites.

The Influence of High-Energy Ball Milling and Sintering Process on the Microstructure and Mechanical Properties of Al-Ni-Y-Co-La Alloy

2013 ◽  
Vol 745-746 ◽  
pp. 281-285
Author(s):  
Y.B. Yuan ◽  
Rui Xiao Zheng ◽  
Su Jing Ge ◽  
Han Yang ◽  
Chao Li Ma
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Ball Milling ◽  
Amorphous Materials ◽  
Volume Fraction ◽  
High Energy ◽  
High Energy Ball Milling ◽  
Process Conditions ◽  
Bulk Alloy ◽  
Energy Ball

Al86Ni7Y4.5Co1La1.5 (at.%) alloy powder was produced by argon gas atomization process. After high-energy ball milling, the powder was consolidated and extruded by using vacuum hot press sintering under different process conditions, sintering temperature, extrusion pressure, sintering time, etc.. The microstructure and morphology of the powder and consolidated bulk alloy were examined by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The phase transformation of the powder was investigated by differential scanning calorimetry (DSC). Mechanical properties of the consolidated bulk alloy were examined. The results showed that as the milling time increase, the volume fraction of amorphous materials and the hardness and yield strength of the bulk alloy were obvious improved.

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