Zobrazeno 1 - 10
of 149
pro vyhledávání: '"Man-Soo Joun"'
Publikováno v:
Lubricants, Vol 12, Iss 10, p 352 (2024)
The tribological phenomena concerning the lubrication regime change (LRC) during bulk metal forming are comprehensively studied. A multi-step cold forward extrusion process shows the evolution of LRC and reveals the shortcomings of the traditional Co
Externí odkaz:
https://doaj.org/article/abce37ec73704f369bcf213c4ef298a1
Autor:
Mohd Kaswandee Razali, Afaf Amera Abd Ghawi, Missam Irani, Suk Hwan Chung, Jeong Muk Choi, Man Soo Joun
Publikováno v:
Journal of Materials Research and Technology, Vol 23, Iss , Pp 3928-3941 (2023)
The static recrystallization (SRX) behavior of 42CrMo steel was investigated by a non-isothermal hot compression test. The conventional empirical equation for SRX was applied to a finite element (FE) simulator using a nonconventional manner of parame
Externí odkaz:
https://doaj.org/article/8c0c8ccef8824024afdbe66dcd2d3865
Publikováno v:
Journal of Magnesium and Alloys, Vol 10, Iss 9, Pp 2516-2533 (2022)
Here, we developed novel extended piecewise bilinear power law (C-m) models to describe flow stresses under broad ranges of strain, strain rate, and temperature for mechanical and metallurgical calculations during metal forming at elevated temperatur
Externí odkaz:
https://doaj.org/article/a4a8d8a00dbd47c5a4380a62390e5fde
Publikováno v:
Journal of Materials Research and Technology, Vol 18, Iss , Pp 3894-3907 (2022)
We present a direct method to calculate by which to calculate flow-related dynamic recrystallization (DRX) kinetic parameters, including the peak strain and the strain at 50% DRX which are essential when predicting microstructural evolution. The meth
Externí odkaz:
https://doaj.org/article/13a72eecb12a4818bd53a3f090661da8
Publikováno v:
Journal of Materials Research and Technology, Vol 18, Iss , Pp 1590-1606 (2022)
The flow behavior of a Ti–6Al–4V alloy during warm forming was characterized, and the results were analyzed to reveal the causes of fracture during warm forging of a small Ti–6Al–4V alloy bolt. The experimental flow curves obtained by compres
Externí odkaz:
https://doaj.org/article/f9466ff59b9e4a65af1ed57d0ead3528
Autor:
Mohd Kaswandee Razali, Afaf Amera Abd Ghawi, Missam Irani, Suk Hwan Chung, Jeong Muk Choi, Man Soo Joun
Publikováno v:
Materials, Vol 16, Iss 19, p 6583 (2023)
An investigation of austenite grain growth (AGG) during the isothermal heat treatment of low-alloy steel is conducted. The goal is to uncover the effect of time, temperature, and initial grain size on SA508-III steel grain growth. Understanding this
Externí odkaz:
https://doaj.org/article/fe6a277d2cc84444ae67998be54f950b
Autor:
Mohd Kaswandee Razali, Man Soo Joun
Publikováno v:
Journal of Materials Research and Technology, Vol 11, Iss , Pp 1881-1894 (2021)
We present a new approach of predicting the dynamic recrystallization (DRX) of an alloy steel during hot compression testing with an emphasis on higher solution accuracy and practicability than the Johnson-Mehl-Avrami-Kolmogorov (JMAK) model approach
Externí odkaz:
https://doaj.org/article/7eb50900ed0041ee86f879143ecbea08
Publikováno v:
Materials, Vol 15, Iss 23, p 8656 (2022)
The flow behaviors of metallic materials are sensitive to state variables, including strain, strain rate, and temperature. In particular, the temperature effect on the flow behavior is of great importance. The flow information is usually obtained at
Externí odkaz:
https://doaj.org/article/cb43f711be69403397522c31f7a6f9f3
Publikováno v:
Metals, Vol 12, Iss 11, p 1930 (2022)
An implicit, elastoplastic, finite element method (FEM) with multi-body treatment function was applied to accurately analyze the real-world shaft clinching of a duplex-pair tapered roller (DPTR) wheel-bearing unit (WBU) under minimal assumptions duri
Externí odkaz:
https://doaj.org/article/71b57e5f1f01435e9be070f2061cad26
Autor:
Man-Soo Joun, Mohd Kaswandee Razali, Chang-Woon Jee, Jong-Bok Byun, Min-Cheol Kim, Kwang-Min Kim
Publikováno v:
Materials, Vol 15, Iss 8, p 2751 (2022)
We focus on the importance of accurately describing the flow behaviors of metallic materials to be cold formed; we refer to several valuable examples. We review the typical experimental methods by which flow curves are obtained, in addition to severa
Externí odkaz:
https://doaj.org/article/6776dc3e8844448da816e02dfa9d7e16