Paper Title:
Weldability of the MSRB Magnesium Alloy
  Abstract

This work, in combination with industrial tests of casting welding, shows that the causes of high-temperature brittleness are the partial tears of the structure and the hot cracks of both the castings, as well as the welded and padded joints. Such phenomena should be treated as irreversible failures caused by the process of crystallization that is in the area of co-existence of the solid and liquid structural constituent. Nil-strength temperature (NST), nil-ductility temperature (NDT) and ductility recovery temperature (DRT) were determined using Gleeble 3800. Obtained results enabled the defining of brittle temperature range of MSR-B magnesium alloy. The assessment of the resistance to hot fractures was conducted on the basis of the transvarestriant trial. The transvarestriant trial involves changing of strain during welding. It was stated that the range of the high-temperature brittleness is very broad, which significantly limits the application of the welding techniques to join or repair elements made of the MSRB alloy. brittleness is caused mainly by metallurgical factors, i.e. precipitation of intermetallic phases from the solid solution.

  Info
Periodical
Solid State Phenomena (Volume 176)
Edited by
Agnieszka Botor-Probierz and Andrzej Kiełbus
Pages
107-118
DOI
10.4028/www.scientific.net/SSP.176.107
Citation
J. Adamiec, "Weldability of the MSRB Magnesium Alloy", Solid State Phenomena, Vol. 176, pp. 107-118, 2011
Online since
June 2011
Authors
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Price
$32.00
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