Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=20524#.VNhuDSzQrzE Author(s)    A. M. Babakr , A. Al-Ahmari , K. Al-Jumayiah , F. Habiby Affiliation(s) Saudi Basic Industries Corporation (SABIC)SABIC Technology Center-Jubail, P.O. Box 11669, Al-Jubail, 31961 Saudi Arabia . Saudi Basic Industries Corporation (SABIC)SABIC Technology Center-Jubail, P.O. Box 11669, Al-Jubail, 31961 Saudi Arabia . Saudi Basic Industries Corporation (SABIC)SABIC Technology Center-Jubail, P.O. Box 11669, Al-Jubail, 31961 Saudi Arabia . Saudi Basic Industries Corporation (SABIC)SABIC Technology Center-Jubail, P.O. Box 11669, Al-Jubail, 31961 Saudi Arabia . ABSTRACT HK alloy is a member of the heat resistant cast alloy family (H-Series) steels. They are widely used in the petrochemical industry for components requiring enhanced high temperature properties. Microstructural changes occurring at high temperature clearly affects...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53714#.VNBuHSzQrzE Author(s)    Osamu Takakuwa 1 , Akihiko Chiba 2 , Hitoshi Soyama 1   Affiliation(s) 1 Department of Nanomechanics, Graduate School of Engineering, Tohoku University, Sendai, Japan . 2 Institute for Materials Research, Tohoku University, Sendai, Japan . ABSTRACT The impact produced when cavitation bubbles collapse can be utilized to modify surfaces in the same way as shot peening and it is called cavitation peening (CP). CP is one of a number of surface modification techniques used to improve the fatigue strength of metallic materials by introducing compressive residual stress. Although it has been shown by an X-ray diffraction method that CP decreases the micro-strain related to dislocations in the sub-surface of a polycrystalline material, the mechanism for this decrease is unclear. In this paper, the movement of dislocations b...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52305#.VI-k1cnQrzE Author(s)   Kevin Luo 1 , Andrew C. Nix 1 , Edward M. Sabolsky 2 Affiliation(s) 1 Department of Mechanical and Aerospace Engineering, Center for Alternative Fuels, Engines and Emissions, Morgantown, USA . 2 Department of Mechanical and Aerospace Engineering, Morgantown, USA . ABSTRACT Research is being conducted to study the degradation of thermal barrier coatings (TBC) employed on IGCC turbine hot section airfoils due to particulate deposition from contaminants in coal syn-thesis gas (syngas). West Virginia University (WVU) had been working with US Department of Energy, National Energy Technology Laboratory...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50943#.VFCEzVfHRK0 Author(s)    Manas Kamal Haldar * , Chandrima Ghosh , Arup Ghosh Affiliation(s) Refractories Division, CSIR-Central Glass & Ceramic Research Institute, Kolkata, India . ABSTRACT The present work intends to study the properties of magnesia based refractory aggregates developed from Indian magnesite by changing lime/silica ratio. The material has been sintered in the temperature range of 1550C - 1700C. The sintered samples are characterized in terms of bulk density, apparent porosity, true density, percentage densification, mechanical, thermo-mechanical properties like cold modulus of rupture, hot modul...