Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Mehran Maalekian"'
Publikováno v:
Journal of Electronic Materials. 46:4076-4084
In this study, the effects of Ag, Ni and Bi additions on the melting, solidification, fluidity and wetting behavior of Sn-0.7Cu base solder alloy are studied. The addition of a small amount of Ni reduces the undercooling and improves the feeding dist
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3892ae9f7c286d9aa13e0d1801465216
https://doi.org/10.1007/s11664-016-5181-2
https://doi.org/10.1007/s11664-016-5181-2
Publikováno v:
Soldering & Surface Mount Technology. 28:93-100
Purpose The purpose of this paper is to investigate the effect of Sb (0, 0.2 and 2 wt.%) on wetting performance of lead-free solder of near eutectic Sn-Cu micro-alloyed with Ni and Ge. Design/methodology/approach The melting characteristic of the lea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a5c3925a24d0ffd1ead0d6f318976fa6
https://doi.org/10.1108/ssmt-08-2015-0023
https://doi.org/10.1108/ssmt-08-2015-0023
Publikováno v:
Metallurgical and Materials Transactions A. 47:608-622
A phase field model (PFM) is applied to simulate the effects of microsegregation, cooling rate, and austenite grain size on banding in a C-Mn steel. The PFM simulations are compared with experimental observations of continuous cooling transformation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2a1be79a3c85ac4e9adc982b39db61e
https://doi.org/10.1007/s11661-015-3225-5
https://doi.org/10.1007/s11661-015-3225-5
Publikováno v:
Materials Science Forum. :407-414
Austenite grain size is an important microstructure parameter when processing steels as it provides the initial condition for the austenite decomposition that determines the final microstructure and thus properties of the steel. In low-carbon steels
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::12e15633d6e9cfbc068b58ad8db2680b
https://doi.org/10.4028/www.scientific.net/msf.715-716.407
https://doi.org/10.4028/www.scientific.net/msf.715-716.407
Publikováno v:
Acta Materialia. 60:1015-1026
Using a novel laser ultrasonics technique in situ measurements of austenite grain growth were conducted during continuous heating (10 °C s−1) and subsequent isothermal holding at various temperatures in the range 950–1250 °C in a microalloyed l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b4e6f039aca9dd0922b124a19fb9296
https://doi.org/10.1016/j.actamat.2011.11.016
https://doi.org/10.1016/j.actamat.2011.11.016
Autor:
Mehran Maalekian, Ernst Kozeschnik
Publikováno v:
Materials Science and Engineering: A. 528:1318-1325
The influence of compressive stress and prior plastic deformation of austenite on the martensite transformation in a eutectoid steel is studied both experimentally and theoretically. It is demonstrated that martensite formation is assisted by stress
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a55d106d4caeb79c6365bab43c3dd2d
https://doi.org/10.1016/j.msea.2010.10.030
https://doi.org/10.1016/j.msea.2010.10.030
Autor:
Mehran Maalekian, Ernst Kozeschnik
Publikováno v:
Materials Science Forum. :2634-2639
The influence of compressive stress up to 250 MPa and plastic deformation of austenite on the martensite transformation behavior of a eutectoid steel is studied both experimentally and theoretically. It is demonstrated that martensite formation is as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72a89fc9fb8b307dd270c3051b62bd9a
https://doi.org/10.4028/www.scientific.net/msf.638-642.2634
https://doi.org/10.4028/www.scientific.net/msf.638-642.2634
Autor:
Horst-Hannes Cerjak, Mehran Maalekian
Publikováno v:
Welding in the World. 53:R44-R51
A thermal phase transformation finite element model is presented to study the orbital friction welding of eutectoid steel components. The experimental microstructure observations and the hardness profile in the weld and heat-affected zone verify the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8595dd164d7d5c8a2303c8a028a2a589
https://doi.org/10.1007/bf03266702
https://doi.org/10.1007/bf03266702
Autor:
Mehran Maalekian, Ernst Kozeschnik
Publikováno v:
Calphad. 32:650-654
A thermodynamic model in the framework of the CALPHAD method is proposed to describe the distribution of interstitial solute (carbon) atoms in bcc-iron during tempering of martensite. In the model, the crystal defects are introduced as a separate sub
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acb27099ac46d32792987df48d430e27
https://doi.org/10.1016/j.calphad.2008.09.004
https://doi.org/10.1016/j.calphad.2008.09.004
Publikováno v:
Acta Materialia. 56:2843-2855
For the first time a comparative thermal analysis of the friction welding process using various heat generation models is presented. The heat-generation rate in orbital friction welding of steel bars is analyzed using four different methods; constant
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65b20d3d2f3540f8f8a4be272ff775c3
https://doi.org/10.1016/j.actamat.2008.02.016
https://doi.org/10.1016/j.actamat.2008.02.016