Resumo

CERON BOLANOS, César; RIVAS, John Sandro  e  CORONADO, John Jairo. Characterization of mechanical properties and micro-structural features of welds used for rebuilding shafts. Rev.fac.ing.univ. Antioquia [online]. 2006, n.36, pp.33-43. ISSN 0120-6230.

Mechanical properties and micro-structural features of welded metal and heat-affected zone (HAZ) of three welding processes used to rebuild worn shafts in sugar cane mills were analyzed. For two welding processes the following characteristics were observed in the HAZ: presence of ferrite in the grain boundary, higher grain growth and Widmanstaetten structure, features that reduce steel toughness. A weld ranking was established from mechanical properties obtained by both tension and Charpy impact tests.

Palavras-chave : sugar mill shaft; rebuild by welding; mechanical properties of welds; micro-structural features of welds.

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