Computer analysis of the cemented carbides’ microstructure
نویسندگان
چکیده
Cemented carbides have been known for about a hundred years and are now widely used in mining, civil road construction, mechanical engineering. Their improvement requires the development of novel technologies based on fundamentally new approaches. Here method microstructure analysis using computer processing with elements machine learning artificial intelligence is proposed. It has applied to micrographs obtained by scanning electron microscopy WC-Co cemented carbides. The geometric parameters WC / Co interphase boundaries extracted mathematical methods digital pictures. This three samples different mean grain sizes. found that distribution contact angles pronounced bimodal structure, values peak practically same fine-, medium-, coarse-grain carbide grades. distributions semiaxes isolated areas cobalt binder also obtained. probability finding particular value long short semiaxis decreases exponentially increasing length. Contrary angles, exponents grains results discussed ideas wetting faceting-roughening boundaries.
منابع مشابه
The Effect of sintering temperature on microstructure and hardness of milled WC- 20 wt.% equiatomic (Fe,Co) cemented carbides
In this study, WC–20 wt.% equiatomic (Fe,Co) powder mixture was milled in a planetary ball mill. The effects of different milling time (15 min, 5h, 10h, and 25 h) and sintering temperatures on the microstructure and mechanical properties of this equi-Fe substituted cermet were investigated. The structural evolution and the crystallite size changes of the powders during milling were monitored by...
متن کاملCemented Carbides – a Success Story
After WW2, a huge market opened in the growing economies and cemented carbides contributed as tool materials and construction parts to their industrial development. Today, cemented carbides are the workhorses in all areas of the manufacturing industries: no factory without cemented carbide tools; no production of glass bottles, aluminium cans or plastic tubes which has not benefited from these ...
متن کاملFocused Ion Beam tomography of WC-Co cemented carbides
The microstructure of three different grades of WC-Co cemented carbides has been reconstructed in three dimensions after sequential images obtained by focused ion beam. The three-dimensional microstructual parameters are compared against the well-know two-dimensional parameters of grain size, phase percentages and mean free path. Results show good agreement with the exception of individual grai...
متن کاملInfluence of substrate microstructure and surface finish on cracking and delamination response of TiN-coated cemented carbides
The cracking and delamination of TiN-coated hardmetals (WC-Co cemented carbides) when subjected to Brale indentation were studied. Experimental variables were substrate microstructure related to low (6%wt. Co) and medium (13%wt. Co) binder content, and surface finishes associated with grinding and polishing stages before film deposition. Brale indentation tests were conducted on both coated and...
متن کاملthe analysis of the role of the speech acts theory in translating and dubbing hollywood films
از محوری ترین اثراتی که یک فیلم سینمایی ایجاد می کند دیالوگ هایی است که هنرپیش گان فیلم میگویند. به زعم یک فیلم ساز, یک شیوه متأثر نمودن مخاطب از اثر منظوره نیروی گفتارهای گوینده, مثل نیروی عاطفی, ترس آور, غم انگیز, هیجان انگیز و غیره, است. این مطالعه به بررسی این مسأله مبادرت کرده است که آیا نیروی فراگفتاری هنرپیش گان به مثابه ی اعمال گفتاری در پنج فیلم هالیوودی در نسخه های دوبله شده باز تولید...
15 صفحه اولذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Letters on Materials
سال: 2021
ISSN: ['2218-5046', '2410-3535']
DOI: https://doi.org/10.22226/2410-3535-2021-4-447-451