scholarly journals Mechanical properties of several newly produced RAFM steels with Tungsten content in the range of 2 wt%

2020 ◽  
Vol 25 ◽  
pp. 100793
Author(s):  
C. Cristalli ◽  
L. Pilloni ◽  
O. Tassa ◽  
L. Bozzetto
Keyword(s):  
Mechanical Properties ◽  
Tungsten Content

Effect of Composition on Microstructure and Dynamic Mechanical Properties of W-Ni-Cu Alloys

2014 ◽  
Vol 513-517 ◽  
pp. 121-124 ◽  
Author(s):  
Hong Zou ◽  
Ying Chun Wang ◽  
Shu Kui Li
Keyword(s):  
Mechanical Properties ◽  
Strain Rate ◽  
Shear Bands ◽  
Dynamic Mechanical Properties ◽  
Tungsten Content ◽  
Softening Effect ◽  
Dynamic Mechanical ◽  
Cu Alloys ◽  
Dynamic Yield Strength ◽  
Dynamic Yield

The effects of tungsten contents (80-88wt.%) and different Ni:Cu ratio (7:3-3:7 by weight) on microstructure and dynamic mechanical properties of W-Ni-Cu alloys were investigated. Results show that at the same sintering conditions, with tungsten content increasing from 80 wt % to 88 wt %, tungsten grains increase slightly. Spherical and more uniform tungsten grains distribute in matrix phase in 85W alloys with Ni:Cu ratio of 1:1 than that of 3:7 and 7:3. The results also show that the dynamic yield strength of W-Ni-Cu alloys goes up with tungsten content increasing, but keep similar deformation capability. With strain rate increasing in the range of 2600-4200s-1, 85W displays strain rate softening effect. Adiabatic shear bands are formed at strain rate over 3200s-1.

Microstructure and Mechanical Properties of Cr-W-B-N Coating Deposited by DC Reactive Magnetron Co-Sputtering

2013 ◽  
Vol 651 ◽  
pp. 430-435
Author(s):  
Lin Yung Tseng ◽  
Jhewn Kuang Chen ◽  
Kai Hung Hsu ◽  
Wan Yu Wu ◽  
Chi Lung Chang
Keyword(s):  
Mechanical Properties ◽  
Volume Fraction ◽  
Nitrogen Plasma ◽  
Reactive Magnetron ◽  
Tungsten Content ◽  
Micro Hardness ◽  
Depth Sensing ◽  
Crystalline Phases ◽  
Sputtering Deposition ◽  
X Ray

Nanocomposite Cr-W-B-N coatings with various tungsten contents were synthesized on silicon wafer substrates. The used technique is a DC reactive magnetron co-sputtering deposition equipped with a Cr-B alloy target with 20 at.% B and a W target in a mixed argon/nitrogen plasma atmosphere. Composition and microstructure of the obtained coatings were investigated using X-ray diffraction, X-ray Photoelectron Spectroscope and transmission electron microscope while the micro-hardness was measured using a depth-sensing nano-indenter. The results have shown that the microstructure and the mechanical properties of Cr-W-B-N coatings were strongly dependent on either the tungsten content or the volume fraction of W-N crystalline phases. It was observed that the micro-hardness of Cr-W-B-N coatings is lower than that of Cr-B-N coating as the tungsten content is less than 24 at.% and the volume fraction of W-N crystalline phases is lower than 37 vol.%. As the tungsten content further increased to 30 at.% and the volume fraction of W-N crystalline phases increased to 55 vol.%, the micro-hardness of Cr-W-B-N coating was found enhanced to 19 GPa and higher than Cr-B-N film. It was also obtained that the volume fraction of Cr-N crystalline phases is inversely proportional to the volume fraction of W-N crystalline phases.

Effect of tungsten content on microstructure and mechanical properties of swaged tungsten heavy alloys

2013 ◽  
Vol 582 ◽  
pp. 389-396 ◽  
Author(s):  
U. Ravi Kiran ◽  
S. Venkat ◽  
B. Rishikesh ◽  
V.K. Iyer ◽  
M. Sankaranarayana ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tungsten Content ◽  
Microstructure And Mechanical Properties ◽  
Heavy Alloys ◽  
Tungsten Heavy Alloys

Phase Transformations in Ti-7w/oMo-3w/oMe Alloy

1974 ◽  
Vol 32 ◽  
pp. 514-515
Author(s):  
S. Fujishiro
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Transmission Electron Microscopy ◽  
Tensile Strength ◽  
Mechanical Processing ◽  
Ray Method ◽  
X Ray ◽  
Transmission Electron ◽  
Water Quench ◽  
Alpha Beta

The mechanical properties of three titanium alloys (Ti-7Mo-3Al, Ti-7Mo- 3Cu and Ti-7Mo-3Ta) were evaluated as function of: 1) Solutionizing in the beta field and aging, 2) Thermal Mechanical Processing in the beta field and aging, 3) Solutionizing in the alpha + beta field and aging. The samples were isothermally aged in the temperature range 300° to 700*C for 4 to 24 hours, followed by a water quench. Transmission electron microscopy and X-ray method were used to identify the phase formed. All three alloys solutionized at 1050°C (beta field) transformed to martensitic alpha (alpha prime) upon being water quenched. Despite this heavily strained alpha prime, which is characterized by microtwins the tensile strength of the as-quenched alloys is relatively low and the elongation is as high as 30%.

Effects of cooling rate on the mechanical properties of dual phase treated vanadium steels

1983 ◽  
Vol 41 ◽  
pp. 220-221
Author(s):  
L.J. Chen ◽  
H.C. Cheng ◽  
J.R. Gong ◽  
J.G. Yang
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Automobile Industry ◽  
High Strength ◽  
Weight Percent ◽  
Low Alloy Steels ◽  
Dual Phase ◽  
Resource Requirement ◽  
Alloy Steels ◽  
Potential Weight

For fuel savings as well as energy and resource requirement, high strength low alloy steels (HSLA) are of particular interest to automobile industry because of the potential weight reduction which can be achieved by using thinner section of these steels to carry the same load and thus to improve the fuel mileage. Dual phase treatment has been utilized to obtain superior strength and ductility combinations compared to the HSLA of identical composition. Recently, cooling rate following heat treatment was found to be important to the tensile properties of the dual phase steels. In this paper, we report the results of the investigation of cooling rate on the microstructures and mechanical properties of several vanadium HSLA steels.The steels with composition (in weight percent) listed below were supplied by China Steel Corporation: 1. low V steel (0.11C, 0.65Si, 1.63Mn, 0.015P, 0.008S, 0.084Aℓ, 0.004V), 2. 0.059V steel (0.13C, 0.62S1, 1.59Mn, 0.012P, 0.008S, 0.065Aℓ, 0.059V), 3. 0.10V steel (0.11C, 0.58Si, 1.58Mn, 0.017P, 0.008S, 0.068Aℓ, 0.10V).

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