Tensile Creep of WC-10%Co and WC-10%TaC-10%Co Alloys at Elevated Temperatures
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چکیده
منابع مشابه
TEM INVESTIGATIONS OF WC-Co ALLOYS AFTER CREEP EXPERIMENTS
Carbide tungsten cobalt alloys were deformed in compression or in three point bending in a temperature range 1000-1350°C and in a stress domain 30-1000MPa. In these conditions, the stress exponent n of WC-CO alloys is a function of only the cobalt volurnic ratio and tends tow rds n = 1 for pure B carbide. The apparent activation energy is 550 kj mole. T.E.M. investigations on pure carbide defor...
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Nowadays, application of cermet coatings deposited by High-Velocity Oxygen-Fuel (HVOF) has received considerable attention in a variety of industries. Carbide coatings have high surface roughness, so it is essential to grind the coated surface. The present investigation studied the effect of simultaneous changes in the grinding parameters including the depth of cut, feed rate and cutting sp...
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In this study, the effect of surface roughness and roughness morphology on the bond strength of WC-Co-Cr coatings has investigated. The three different surfaces morphology are use for this purpose. The first and tow samples sandblasted with alumina and silicon carbide respectively. Other sample no sandblasted before spraying process. The same WC-10Co-4Cr coating deposited on the substrates with...
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The high-velocity oxygen-fuel (HVOF) spraying process was used to fabricate conventional WC-10Co-4Cr coatings and FeCrSiBMn amorphous/nanocrystalline coatings. The synergistic effect of cavitation erosion and corrosion of both coatings was investigated. The results showed that the WC-10Co-4Cr coating had better cavitation erosion-corrosion resistance than the FeCrSiBMn coating in 3.5 wt.% NaCl ...
متن کاملبررسی تجربی و شبیه سازی توزیع تنش پسماند در راستای ضخامت پوشش WC-10Co-4Cr به روش HVOF
کاربرد پوشش WC-10Co-4Cr ایجاد شده توسط روش پاشش حرارتی با سوخت اکسیژن در سرعت بالا، HVOF، به دلیل مقاومت سایشی و خوردگی بالا، به میزان قابل توجه ای توسعه یافته است. تنش های پسماند ایجاد شده در طی فرآیند پوشش دهی بر مقاومت سایشی و چسبندگی پوشش به زیرلایه مؤثر هستند. در این مطالعه، تنش پسماند پوشش توسط تکنیک پراش اشعه ایکس (XRD) به روش sin2 و تحلیل المان محدود تعیین گردید. در انداز...
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ژورنال
عنوان ژورنال: Transactions of the Japan Institute of Metals
سال: 1975
ISSN: 0021-4434,2432-4701
DOI: 10.2320/matertrans1960.16.591