Zobrazeno 1 - 10
of 180
pro vyhledávání: '"CHANG-MIN SUH"'
Publikováno v:
한국해양공학회지, Vol 38, Iss 5, Pp 294-306 (2024)
The bainitic structure resulting from the austempering of spring steel exhibits high strength and ductility. On the other hand, there appears to be no study on the effects of very high cycle fatigue (VHCF) and ultrasonic nanocrystal surface modificat
Externí odkaz:
https://doaj.org/article/3195ee8b883f453ebdc75789cf2bc3b8
Publikováno v:
Metals, Vol 12, Iss 2, p 304 (2022)
It has been reported that a multiphase microstructure with bainite, martensite, and retained austenite obtained by austempering, or quenching and tempering of spring steel containing Si, Mn, and Cr exhibits high strength and ductility. However, littl
Externí odkaz:
https://doaj.org/article/b539d8119df044db92007373fe3a17dc
Publikováno v:
한국해양공학회지, Vol 32, Iss 6, Pp 492-501 (2018)
The following results were obtained from a series of studies to accumulate data to reduce the coefficient of friction for press dies by performing tribological tests before and after the UNSM treatment of SM45C. The UNSM-treated material had a nano-s
Externí odkaz:
https://doaj.org/article/9e57c03d0bc84e00bd5f8ecc15b204a8
Publikováno v:
한국해양공학회지, Vol 32, Iss 6, Pp 502-510 (2018)
In order to accumulate data to lower the friction coefficient of a press mold, tribological tests were performed before and after coating SM45C with a PVC/PO film and plasma coating (CrN, concept). The ultrasonic nanocrystal surface modification (UNS
Externí odkaz:
https://doaj.org/article/7aa585ec638646c7b37d5fed5ddb4408
Publikováno v:
The Journal of Engineering (2015)
This study investigates the influence of ultrasonic nanocrystal surface modification (UNSM) technique on fatigue properties of SAE AMS 5662 (solution treatment) of Inconel 718 alloys. The fatigue properties of the specimens were investigated using a
Externí odkaz:
https://doaj.org/article/d87533a75e6e42fca7ff5ec571af4e56
Publikováno v:
Advances in Mechanical Engineering, Vol 7 (2015)
Fatigue characteristics of A7075-T651 aluminum material were studied with surface treatment of shot peening. The fatigue life was characterized by two fatigue testing methods, ultrasonic fatigue test (UFT, 20 kHz) and the rotary-bending fatigue test
Externí odkaz:
https://doaj.org/article/d2fe299f6f0a41c0a65e3e21e8baa5e7
Publikováno v:
International Journal of Modern Physics B. 35
Bearing steel is essential for the driving parts of the rotating body, but fisheye crack of inclusions such as TiN, Al2O3 and Cr matrix is formed in the very-high-cycle fatigue (VHCF) regime. Therefore, research on the development of a clean bearing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68cb55948dfc2acf1be46b08851b7726
https://doi.org/10.1142/s0217979221502684
https://doi.org/10.1142/s0217979221502684
Publikováno v:
Metals; Volume 12; Issue 6; Pages: 901
It has been reported that the duplex bainite microstructure obtained by austempering (AT) shows higher strength, ductility and impact toughness than quench and tempered (QT) martensite structure in SAE9254 spring steel. However, there seems to be no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbe28b1207240fc2c760572a609dc587
https://doi.org/10.3390/met12060901
https://doi.org/10.3390/met12060901
Publikováno v:
Transactions of the Korean Society of Mechanical Engineers - A. 42:803-813
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1d243b9b9243ca6be6ad652c02788ae
https://doi.org/10.3795/ksme-a.2018.42.9.803
https://doi.org/10.3795/ksme-a.2018.42.9.803
Publikováno v:
Transactions of the Korean Society of Mechanical Engineers - A. 42:513-521
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5740b8604943312cab69ece3e240d26d
https://doi.org/10.3795/ksme-a.2018.42.6.513
https://doi.org/10.3795/ksme-a.2018.42.6.513