We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Atrito interno em aços inoxidáveis austeníticos contendo cobre.
- Authors
Simões, Maurício Silva; de Castro, Ana Luiza Resende; Andrade, Margareth Spangler
- Abstract
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 20°C, 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 α' 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 ϵ martensite reversion. The presence of other two peaks around 220 and 350°C was associated to the α' present in the sample.
- Subjects
AUSTENITIC stainless steel; INTERNAL friction; COPPER; MARTENSITIC stainless steel; TORSION pendulums; STRAINS &; stresses (Mechanics); MAGNETIC measurements; DEFORMATIONS (Mechanics); MARTENSITE
- Publication
Rem: Revista Escola de Minas, 2010, Vol 63, Issue 1, p51
- ISSN
0370-4467
- Publication type
Article