Resumo

ROMERO CONTRERAS, Jorge E.  e  CABELLO SEQUERA, Sandra B.. Dry sliding wear behavior of super duplex stainless steel in a ball on ring tribometer. Rev. colomb. biotecnol [online]. 2020, vol.22, n.1, pp.6-17. ISSN 0123-3475.  https://doi.org/10.15446/rev.colomb.biote.v22n1.60835.

In this paper the characterization of the behavior during dry sliding wear of a super duplex stainless steel was performed. The tests were developed in a ball on ring tribometer type. As material of the ring is used the duplex stainless steel type SAF 2507 without heat treatment and as material for the ball is used the steel AISI 52100. Tests were conducted without lubrication in ambient conditions (air), temperature and humidity laboratory standard was used. The parameters selected in order to study its effects on sliding wear coefficient were: sliding speed (0.9 m/s and 2 m/s), normal load (9 N, 19 N and 29 N) and distances slip (500 m, 1000 m and 2000 m). Taguchi experimental design with nine treatments and two replicates was used. In the characterization of steel SAF 2507 wear coefficient values was obtained in the range from 0.19588 x 10-12 m2/N to 0.72381 x 10-12 m2/N, for the conditions tested. The factor that most affects the wear coefficient is the sliding velocity. The wear mechanism identified for the SAF 2507 was adhesion and high speed delamination.

Palavras-chave : Sliding wear; duplex stainless steel; Taguchi method; tribology.

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