scholarly journals Effects of specimen size and shape on the transverse-rupture strength of a cemented carbide.

1989 ◽  
Vol 55 (511) ◽  
pp. 584-589
Author(s):  
Sotomi ISHIHARA ◽  
Kazyu MIYAO ◽  
Takashi YOSHIMOTO ◽  
Masao KOSHI
Keyword(s):  
Rupture Strength ◽  
Specimen Size ◽  
Cemented Carbide ◽  
Transverse Rupture Strength ◽  
Size And Shape

scholarly journals Effect of Specimen Volume on Transverse-Rupture Strength of WC-10%Co Cemented Carbide

1977 ◽  
Vol 24 (8) ◽  
pp. 232-235
Author(s):  
Hisashi Suzuki ◽  
Teruyoshi Tanase ◽  
Fumio Nakayama ◽  
Koji Hayashi
Keyword(s):  
Rupture Strength ◽  
Cemented Carbide ◽  
Transverse Rupture Strength ◽  
Specimen Volume

Simultaneously high fracture toughness and transverse rupture strength in ultrafine cemented carbide

CrystEngComm ◽  
2013 ◽  
Vol 15 (17) ◽  
pp. 3305 ◽  
Author(s):  
Chongbin Wei ◽  
Xiaoyan Song ◽  
Jun Fu ◽  
Xuemei Liu ◽  
Haibin Wang ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Rupture Strength ◽  
Cemented Carbide ◽  
High Fracture Toughness ◽  
High Fracture ◽  
Transverse Rupture Strength

Mechanical Properties of WC-Co Cemented Carbide Prepared via Vacuum Sintering

2013 ◽  
Vol 275-277 ◽  
pp. 1917-1920
Author(s):  
Bing Liang Liang ◽  
Yun Long Ai ◽  
Chang Hong Liu ◽  
Nan Jiang
Keyword(s):  
Mechanical Properties ◽  
Phase Composition ◽  
Relative Density ◽  
Sintering Temperature ◽  
Rupture Strength ◽  
Cemented Carbide ◽  
Vacuum Sintering ◽  
Transverse Rupture Strength ◽  
Temperature Range ◽  
Peak Value

WC-Co cemented carbide specimens were prepared via vacuum sintering. The influences of composition and sintering temperature on phase composition, microstructure and mechanical properties of WC-Co cemented carbide were investigated. The results show that dense specimens were obtained in the sintering temperature range of 1280~1400°C and the relative density reached over 95%. Only WC and Co3W3C (-phase) were detected by XRD without any else phases, even though Co. With the ascended sintering temperature, hardness increased and the transverse rupture strength (TRS) ascended to peak value and then descended. WC-Co cemented carbide with excellent mechanical properties (HRA>90, TRS~700MPa and KIC>10MPa•m1/2) were obtained.

Effects of Microcracks in CVD Coating Layers on Cemented Carbide and Cermet Substrates on Residual Stress and Transverse Rupture Strength

1997 ◽  
Vol 119 (1) ◽  
pp. 50-54 ◽  
Author(s):  
Sakae Katayama ◽  
Masayuki Hashimura
Keyword(s):  
Residual Stress ◽  
Coating Layer ◽  
Rupture Strength ◽  
Cemented Carbide ◽  
Tensile Residual Stress ◽  
Transverse Rupture Strength ◽  
Beneficial Effects ◽  
Thermal Expansion Coefficients ◽  
Coating Layers ◽  
Expansion Coefficients

Microcracks were mechanically induced in the CVD coating layers on two types of cemented carbides with different thermal expansion coefficients, and one type of cermet. The microcracks were found to have beneficial effects on residual stress, transverse rupture strength, and chipping resistance during interrupted cutting. Residual stress in the coating on cemented carbide is tensile. Tensile residual stress decreases with increasing microcrack width and decreasing microcrack distance. Induction of 20 μm-distant and 0.025 μm-wide cracks relieves tensile residual stress by about 0.5 GPa, increases transverse rupture strength by about 0.70 GPa, and almost doubles the chipping resistance. Residual stress in the coating on cermet is compressive. Microcracks in the coating layer do not change residual stress or transverse rupture strength.

Effect of Cryogenic Treatment on the Performance of Ultrafine Cemented Carbide

2014 ◽  
Vol 1015 ◽  
pp. 181-184 ◽  
Author(s):  
Ai Min Jiang ◽  
Xian Quan Jiang ◽  
Rong Yu ◽  
Rong Jie Yang
Keyword(s):  
Magnetic Properties ◽  
Coercive Force ◽  
Rupture Strength ◽  
Cryogenic Treatment ◽  
Cemented Carbide ◽  
Cemented Carbides ◽  
Transverse Rupture Strength

The effect of cryogenic treatment on the mechanical and magnetic properties of WC–6% Co Ultrafine cemented carbides has been investigated in this paper. The results show that after the cryogenic treatment, the hardness slightly increases from 1750 to 1830, however, the transverse rupture strength decreases from 2510 MPa to 2480MPa. ,the magnetization decreased from 5.82% to 5.72%, decreasing 1.71%for 24 h, but the coercive force slightly increases and reaches the maximum of 24 kA/m for 2h.

Effect of Ruthenium on Microstructure and Properties of WC- (W, Ti, Ta) C-Co Cemented Carbide

2020 ◽  
Vol 993 ◽  
pp. 851-856
Author(s):  
Xin Yu Yang ◽  
Qi Jia Tang ◽  
Xu Hui Zhang ◽  
Jun Shu ◽  
Jun Liao
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Wear Resistance ◽  
Rupture Strength ◽  
Cemented Carbide ◽  
Uniform Structure ◽  
Transverse Rupture Strength ◽  
Cutting Test ◽  
Bonding Phase ◽  
Scanning Electron

Two different ruthenium content (0.5%, 1.0%) of WC - (W, Ti, Ta) C - Co cemented carbide were prepared by conventional cemented carbide production process. The results showed that adding ruthenium powder can improve the microstructure of alloy compared with excluding ruthenium carbide. The microstructure of alloy with ruthenium addition had uniform structure with less coarse grain.The addition of ruthenium could obviously promote the transverse rupture strength of WC - (W, Ti, Ta) C-Co cemented carbide, and when the adding amount was 1.0%, transverse rupture strength increased by 30%. The addition of ruthenium slightly increased the hardness of the alloy. The results of Scanning electron microscopy and spectrum analysis showed that ruthenium mainly existed in the bonding phase Co. The cutting test showed that the alloy with Ru had better wear resistance.

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