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Authors: M. Werinos, H. Antrekowitsch, W. Fragner, T. Ebner, P.J. Uggowitzer, S. Pogatscher
It has been shown that minute additions of Sn to Al-Mg-Si alloys suppress and/or reduce the negative effect of natural pre-aging on artificial aging. This is of great importance for their application in precipitation hardened lightweight structures, particularly in automotive components. Sn not only retards the hardness increase during natural aging, it also enhances artificial aging kinetics and maximum hardness.
Effect Of Cobalt Content On Fatigue Lifetimes And Short Fatigue Crack Growth Behavior Of Tungsten-Cobalt Cemented Carbides
Authors: Hiroko Mikado, Sotomi Ishihara, Noriyasu Oguma, Kenichi Masuda, Shingo Kawamura
Fatigue lifetimes and crack growth behavior of the cemented carbides with different Co content were investigated. Effect of the Co content on the fatigue lifetimes is found to be minimal within the Co content, 13 -18 wt% tested in the present study.
Authors: K. Manigandan, T.S. Srivatsan, T. Quick
In this paper the results of a study aimed at investigating and understanding the quasi-static, cyclic fatigue properties and final fracture behavior of an aluminum alloy reinforced with particulates of ceramic, a viable candidate for use in brake drums of emerging automobiles, is highlighted. The processing treatment used to engineer the aluminum alloy composite is detailed.
Authors: Pavel Podany, Petr Martinek, Jana Miskova
A failure investigation of fracture was conducted on pitman arm of stamping press. Fracture area was investigated by means of scanning electron microscope.
Authors: Izaak Williamson, Eric B. Nelson, Lan Li
The efficient separation and storage of CO2 from electric power plant flue gases can reduce the amount of CO2 released into the atmosphere and mitigate globabl warming.
Authors: Jing Zhang, Guihua Liu, Zaixin Feng, Michael Golub, Guangrong Yan , Yong tao Dong
In extrusion processing of disk shape aluminum alloy components, large extrusion forces are typically required to form flange, holes and rib structures.
Control Of Internal Cracks In The Ingots Of Fe-Cr-Al Alloy Produced By Electroslag Remelting Process
Authors: Weihua Zhang, Shufeng YangR, Jingshe Li, Xiangzhou Gao
The reasons caused internal cracks in the 200 kg Fe-Cr-Al alloy ingot produced by electroslag remelting (ESR) process were analyzed by industrial experiments and the effects of mold structure, cooling method and intensity, and heating voltage and current were included.
Authors: Jing Zhang, Xingye Guo, Yeon -Gil Jung, Li Li, James Knapp
Pore morphology of thermal barrier coatings is an important parameter affecting the thermal and mechanical properties of the coatings. In this work, a quantitative imaging analysis of the pores in an air plasma sprayed lanthanum zirconate thermal barrier coating has been conducted.
Authors: Gang Li, Shufeng Yang, Jing she Li, Xiangzhou Gao
Arcing can result in arc point on the ingot surface in Electroslag Remelting process, which influences the quality of ingot. In this paper, a 200 kg iron-chromium alloy ingot was employed to study the formation mechanisms of arc point by industrial trials.
Authors: Alexey Rodin, Nikolai Dolgopolov
There are some contradictory data about effect of alloying on grain boundary diffusion (GBD). In some systems GBD decreases with addition of impurities or alloing elements, in other - increases.