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Type: Artigo de periódico
Title: Aging Heat Treatment Effect On The Microstructure And Impact Properties Of The Super-austenitic Stainless Steel Astm A 744 Gr. Cn3mn [efeito Do Tratamento Térmico De Solubilização Na Microestrutura E Nas Propriedades De Impacto Do Aço Inoxidável Superaustenítico Astm A 744 Gr. Cn3mn]
Author: Ritoni M.
Mei P.R.
Martins M.
Abstract: This research investigated the influence of solution heat treatments on the microstructure and properties of this type of material. These treatments were carried out at temperatures ranging from 1100 to 1250°C. Impact (Charpy) tests were conducted at room temperature and -46°C for all solution treated samples. The microstructural analyses were carried out by scanning electron microscopy, transmission electron microscopy and X-ray diffraction. It was concluded that, to maximize the material's impact strength, the solution heat treatment should be done at 1200°C, at which temperature the volumetric fraction of precipitates is lower than at other solution heat treatment temperatures. The samples that were solution heat treated at 1200 and 1240°C presented sigma (σ) and M6C carbide phases.
Rights: aberto
Identifier DOI: 
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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