SciELO - Scientific Electronic Library Online

vol.63 issue1Effect of the temperature on the structure and stability of Fe - 18 Cr - (0 to 60) Ni alloysThe influence of delta ferrite on forged austenitic stainless steel author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Rem: Revista Escola de Minas

Print version ISSN 0370-4467


SIMOES, Maurício Silva; CASTRO, Ana Luiza Resende de  and  ANDRADE, Margareth Spangler. Internal friction in austenitic stainless steels with copper. Rem: Rev. Esc. Minas [online]. 2010, vol.63, n.1, pp.51-55. ISSN 0370-4467.

The influence of the different types and amounts of strain induced martensite in AISI 304 austenitc steel with copper in internal friction behavior was studied. Specimens were deformed by tension from 0.03 to 0.12 of true strain at temperatures in the range -50 to 20ºC, in order to obtain different volumetric fractions of ε (HCP) and α' (BCC) strain induced martensites. Magnetic measurements and dilatometry were conducted to assess the quantities of induced martensite. It was found that a' increases with deformation at constant temperature, and decreases as the temperature increases at constant deformation. Internal friction tests were performed in an inverted torsion pendulum in temperatures in the range of 40 to 400°C. The occurrence of an internal friction peak around 100°C was well established and related to the e martensite reversion. The presence of other two peaks around 220 and 350°C was associated to the a' present in the sample.

Keywords : Austenitic stainless steel; strain-induced martensite; dilatometry; internal friction.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License