Influence of the impact sintering temperature on the structure and properties of samples from the different iron powders

2017 ◽  
Vol 28 (2) ◽  
pp. 363-374 ◽  
Author(s):  
Anatolii Laptiev ◽  
Barbara Romelczyk ◽  
Oleksandr Tolochyn ◽  
Tomasz Brynk ◽  
Zbigniew Pakiela
Keyword(s):  
Sintering Temperature ◽  
Structure And Properties ◽  
Iron Powders ◽  
The Impact

Effect of Spark Plasma Sintering on the Microstructure Evolution and Properties of M3:2 High-Speed Steel

2014 ◽  
Vol 788 ◽  
pp. 329-333
Author(s):  
Rui Zhou ◽  
Xiao Gang Diao ◽  
Jun Chen ◽  
Xiao Nan Du ◽  
Guo Ding Yuan ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Spark Plasma Sintering ◽  
High Speed ◽  
Bending Strength ◽  
Sintering Temperature ◽  
High Speed Steel ◽  
Continuous Heating ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
The Impact

Effects of sintering temperatures on the microstructure and mechanical performance of SPS M3:2 high speed steel prepared by spark plasma sintering was studied. High speed steel sintering curve of continuous heating from ambient temperature to 1200°C was estimated to analyze the sintering processes and sintering temperature range. The sintering temperature within this range was divided into groups to investigate hardness, relative density and microstructure of M3:2 high-speed steel. Strip and quadrate carbides were observed inside the equiaxed grains. SPS sintering temperature at 900°C can lead to nearly full densification with grain size smaller than 20μm. The hardness and bending strength are higher than that of the conventionally powder metallurgy fabricated ones sintered at 1270°C. However, fracture toughness of the high speed steel is lower than that of the conventional powder metallurgy steels. This can be attributed to the shape and distribution of M6C carbides which reduce the impact toughness of high speed steels.

Effect of boron additives on the structure and properties of soft magnetic composites produced from nickel-clad iron powders

2012 ◽  
Vol 51 (5-6) ◽  
pp. 253-259 ◽  
Author(s):  
N. V. Boshitskaya ◽  
O. V. Vlasova ◽  
I. V. Uvarova ◽  
L. M. Appininskaya ◽  
O. I. Get’man
Keyword(s):  
Structure And Properties ◽  
Soft Magnetic ◽  
Magnetic Composites ◽  
Iron Powders ◽  
Soft Magnetic Composites

The impact of fluorination on the structure and properties of self-assembled monolayer films

Soft Matter ◽  
2013 ◽  
Vol 9 (28) ◽  
pp. 6356 ◽  
Author(s):  
Oussama Zenasni ◽  
Andrew C. Jamison ◽  
T. Randall Lee
Keyword(s):  
Structure And Properties ◽  
Self Assembled Monolayer ◽  
Monolayer Films ◽  
Self Assembled ◽  
The Impact

Influences of RE-Ti Composite Modification on the Structure and Properties of W6Mo5Cr4V2 Alloy

2008 ◽  
Vol 33-37 ◽  
pp. 455-458 ◽  
Author(s):  
Xi Lan Feng ◽  
Zhi Qiang Jiang ◽  
Zhong Yan Hu
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Rare Earth ◽  
Structure Refinement ◽  
Matrix Structure ◽  
Structure And Properties ◽  
Eutectic Carbides ◽  
High Temperature Wear ◽  
The Impact ◽  
Composite Modification

The structural change and properties of W6Mo5Cr4V2 alloy (M2 steel) inoculated by addition of rare earth (RE)-Ti were investigated. The results indicated that the impact toughness and fracture toughness were increased distinctly due to network eutectic carbides elimination, matrix structure refinement, and well-distribution of eutectic carbides. The hardness of modified M2 steel hardly changed. In addition, the high temperature wear resistance was improved.

Influence of Sintering Temperature on the Structure and Properties of Powder Iron Aluminide Fe3Al

2020 ◽  
Vol 59 (3-4) ◽  
pp. 150-159
Author(s):  
O.I. Tolochyn ◽  
O.V. Tolochyna ◽  
H.A. Bagliuk ◽  
Ya.I. Yevych ◽  
Yu.M. Podrezov ◽  
...  
Keyword(s):  
Sintering Temperature ◽  
Iron Aluminide ◽  
Structure And Properties ◽  
Powder Iron

Effects of tension fatigue on the structure and properties of carbon black filled-SBR and SBR/TPI blends

2019 ◽  
Vol 40 (1) ◽  
pp. 13-20
Author(s):  
Liu Yang ◽  
Kaikai Liu ◽  
Zijun Gu ◽  
Aihua Du
Keyword(s):  
Carbon Black ◽  
Tensile Properties ◽  
Crosslink Density ◽  
Dynamic Properties ◽  
Fatigue Properties ◽  
Styrene Butadiene Rubber ◽  
Butadiene Rubber ◽  
Structure And Properties ◽  
Tan Δ ◽  
The Impact

Abstract The aim of this study was to explore the impact of tension fatigue on the structure and properties of filled SBR and SBR/TPI blends. The effect of tension fatigue on the dynamic properties of carbon black-filled styrene-butadiene rubber (SBR) and SBR/trans-1,4-polyisoprene (SBR/TPI) blend vulcanizates were investigated by dynamic mechanical analysis (DMA). The Mooney-Rivlin analysis of tensile stress-strain data is used for the determination of a rubber network crosslink density. The fatigue fracture surface of SBR/TPI vulcanizates was observed with a scanning electron microscopy (SEM). The crystallinity of TPI in carbon black-filled SBR/TPI (80/20) was characterized by X-ray diffraction (XRD). The results showed that the incorporation of TPI into SBR vulcanizates influences the fatigue properties of the blend vulcanizates. The blend vulcanizates showed optimum fatigue properties with 20 phr TPI. With increasing fatigue cycles, the tensile properties and crosslink density of SBR vulcanizates were decreased substantially. Compared with that of SBR vulcanizates, the tensile properties and crosslink density of SBR/TPI (80/20) blend vulcanizates changed little with the increase in fatigue cycles, and tan δ and E′ decreased gradually with the fatigue cycles. There was a sharp decrease in the E′ and tan δ curve in the temperature range of 40 ~ 60°C. The XRD diffraction peak corresponding to 3.9 Å broadened when the fatigue cycles were increased to 1 million times, and a new peak with inter-planar spacing at 7.6 and 4.7 Å appeared.

Study on Structure and Properties of Porous Copper Alloy

2013 ◽  
Vol 833 ◽  
pp. 301-304
Author(s):  
Hao Zhong ◽  
Yun Zhou
Keyword(s):  
Compressive Strength ◽  
Relative Density ◽  
Pore Size ◽  
Alloy Powder ◽  
Sintering Temperature ◽  
Raw Material ◽  
Structure And Properties ◽  
Pore Former ◽  
Porous Copper ◽  
Increasing Trend

CuSn6Zn6 alloy powder and a pore former were used as raw material. Porous bronze was successfully prepared by the sintering and dissolution process (SDP). The porosity is in range of 76%~88%, and the pore size is in range of 0.8~3.3mm. The effect of the porosity and cell sizes of specimens on its mechanical property was investigated, and the effect of sintering temperature on its relative density and porosity was also studied. The experimental results indicate that under the condition of the same pore size, the compressive strength decreases with the increase of porosity, the compressive strength changes from 10Mpa to 2Mpa with the porosity from 76% to 88%; under the same porosity condition, the compressive strength does not change significantly with the pore size, but it has a slightly increasing trend with the decrease of the pore size. The relative density of the specimens increases with the increase of the sintering temperature.

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