Microstructural characteristics of spray formed and heat treated Al–(Y, La)–Ni–Co system

Srivastava, V. C.; Surreddi, Kumar Babu; Scudino, Sergio; Schowalter, Marco; Uhlenwinkel, Volker; Schulz, A.; Eckert, J.; Rosenauer, A.; Zoch, H.‐W.

doi:10.1016/j.jallcom.2013.06.159

Cited by 9 publications

(1 citation statement)

References 27 publications

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“…Spray deposition in this study was accomplished using a high pressure of 6.0 MPa and a nozzle diameter of 2 mm, which effect a low melt mass flow rate, thereby increasing the gas to melt mass flow rate ratio. In this study, in contrast to the deposit the oversprayed powders showed fully crystalline state, which was observed by other investigators too for different alloy systems . It was concluded in this study that the cooling rate of the deposit was higher than that obtained during gas atomization.…”

Section: Studies On Amorphization/nano‐crystallization By Spray Formingsupporting

confidence: 72%

Bulk synthesis of amorphous and nano‐crystalline materials by spray forming

Srivastava

Ellendt

Meyer

et al. 2014

Materialwissenschaft Werkst

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Bulk amorphous and nano‐crystalline metallic materials have been observed to possess excellent mechanical and physical properties. The conventional process routes, to synthesize such materials, are restricted by their ability to achieve rapid solidification, which limits the dimensions of the materials produced. In the last 10–12 years, spray forming has been employed to avoid these limitations by using its capability of layer by layer deposition of undercooled droplets. The current literature indicates that the opportunities provided by this process can be effectively utilized to produce bulk materials in a single step. In this paper, an attempt has been made to bring out the developments in the synthesis of bulk amorphous and/or nano‐crystalline materials by spray forming. The effect of process parameters, droplet size distribution in the atomized spray, the thermal conditions of droplets prior to deposition and the deposition surface conditions have been discussed. It has been demonstrate that a layer by layer deposition of undercooled droplets of glass forming alloys on a relatively cold deposition surface is the suitable condition to achieve bulk amorphous/nano‐crystalline materials.

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Section: Studies On Amorphization/nano‐crystallization By Spray Formingsupporting

confidence: 72%