Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Nick R. Green"'
Autor:
Nils Warnken, Biao Cai, Oxana V. Magdysyuk, Peter D. Lee, Elodie Boller, T. Nelson, Nick R. Green
The effect of gravity on thermo-solutal convection and its impact on solidification dynamics of an Al-15 wt%Cu alloy were studied using high speed synchrotron tomography. A method for mapping the composition of the solidifying samples was developed,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::035aa91372b6bc745c23617bb655522b
http://hdl.handle.net/10044/1/76942
http://hdl.handle.net/10044/1/76942
Publikováno v:
Oxidation of Metals. 81:287-298
Investment casting is an economical method to manufacture near net-shape metal components. Due to the very high thermal and chemical inertness, yttria has been widely used as the mould face coat material for the investment casting of titanium alloy f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b827937d1d18801f7a233b0f7332ffb
https://doi.org/10.1007/s11085-013-9460-5
https://doi.org/10.1007/s11085-013-9460-5
Modelling and validation: Casting of Al and TiAl alloys in gravity and centrifugal casting processes
Autor:
Nick R. Green, D. McBride, T.N. Croft, Mark Cross, N.J. Humphreys, Paul Anthony Withey, D.M. Shevchenko
Publikováno v:
The Lens
Components which best utilise the properties of high temperature titanium alloys are characterised by thin sections of a few millimetres thickness and hundreds of millimetres length. These alloys however are difficult to work with, being highly react
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9bd787f302016848f318a8e112dc09d
https://doi.org/10.1016/j.apm.2013.03.030
https://doi.org/10.1016/j.apm.2013.03.030
Publikováno v:
Ceramics International. 39:4791-4799
The sintering behaviour of conventional yttria powder was investigated, with emphasis on the effect of sintering additives such as B2O3, YF3, Al2O3, ZrO2, and TiO2, etc. at sintering temperatures from 1000 °C to 1600 °C. Powder shrinkage behaviour
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8c90ff4cb396c718ba520fd6ab3ae94
https://doi.org/10.1016/j.ceramint.2012.11.069
https://doi.org/10.1016/j.ceramint.2012.11.069
Publikováno v:
Materials Science Forum. 765:180-184
An experiment was undertaken to study the oxidation of liquid superpure aluminium (SP-Al) and alloys containing Mg, Si, Cu and Fe. The alloys were held at 750 °C, for a number of different holding times up to 7 hours. A comparison of the oxidation o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a7a4489eff5bde2a281cda388493c00
https://doi.org/10.4028/www.scientific.net/msf.765.180
https://doi.org/10.4028/www.scientific.net/msf.765.180
Publikováno v:
Materials Science Forum. 765:150-154
The combined function of a FIB milling technique utilising beam sizes of under 10 nm coupled with a micromanipulator and FIB imaging enables analysis of the microstructure of samples and fabrication of TEM thin foils. This is accomplished at desired
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::042065984e9615dfad3dd2d4e3ef3a6e
https://doi.org/10.4028/www.scientific.net/msf.765.150
https://doi.org/10.4028/www.scientific.net/msf.765.150
Publikováno v:
Materials Science Forum. 765:225-229
Entrainment defects such as double oxide films and entrapped bubbles occur frequently in aluminium alloy castings during the mould-filling process, and are very detrimental to both mechanical properties, and reproducibility of casting properties. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::918aa0ba167d90f4f3c05b3a5db694d5
https://doi.org/10.4028/www.scientific.net/msf.765.225
https://doi.org/10.4028/www.scientific.net/msf.765.225
Autor:
Simon Ruffle, William D. Griffiths, Nick R. Green, Michael Buckley, Tayeb Zeguer, R.D.S. Watson
Publikováno v:
Materials Science Forum. 765:326-330
High Pressure Die Casting is an economical means of manufacturing complex thin walled parts in high volumes. However, the process is prone to high levels of surface turbulence and fluid break-up, which results in the entrainment of bifilm defects. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dce55396328d6ff39bc82f151b46b5ea
https://doi.org/10.4028/www.scientific.net/msf.765.326
https://doi.org/10.4028/www.scientific.net/msf.765.326
Publikováno v:
Materials Science and Technology. 29:351-356
Yttria is widely used as a key material in the manufacture of the mould face coat for the investment casting of Ti or titanium aluminide alloys, as it has the required thermal and chemical inertness. Because of the high melting temperature of yttria,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4006fa7efb8b9d36f54111ef07ca2387
https://doi.org/10.1179/1743284712y.0000000163
https://doi.org/10.1179/1743284712y.0000000163
Publikováno v:
Journal of the European Ceramic Society. 32:4041-4049
Yttria is an important primary coat material in investment shells for casting extremely reactive TiAl alloys and polymer is usually added to slurry to improve strength of the shell. In this investigation, systems that vary the polymer content through
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b0f425ce0429c4891ad2959ac0ac2b7
https://doi.org/10.1016/j.jeurceramsoc.2012.06.010
https://doi.org/10.1016/j.jeurceramsoc.2012.06.010