Influence of sliding velocity, applied load and strain-induced martensitic transformation on the sliding wear resistance of the austenitic stainless steels. / Influência da velocidade de deslizamento, da carga normal e da transformação martensítica induzida por deformação plástica na resistência ao desgaste por deslizamento dos aços inoxidáveis austeníticos.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

In this work, sliding wear mechanism of AISI 304 and AISI 316 austenitic stainless steels were studied as a function of the applied load (from 6 N to 20 N) and the tangential velocity (from 0.07 m/s to 0.81 m/s). Following the 23 factorial design, wear experiments were performed using a conventional pin-on-disc machine. Worn surfaces and wear debris analysis techniques were used: scanning electron microscopy (SEM), X-ray diffraction, Mössbauer spectroscopy, stylus profiling, surface temperature measurement and instrumented indentation. Plasticity-dominated wear (metallic debris oxidation, adhesive wear and mixed wear) are the sliding wear mechanisms for AISI 304 and AISI 316 steels. The wear rate behavior depended on interaction effect between applied load and tangential velocity. An empirical model of wear rate as a function of applied load and tangential velocity was obtained by means of the central composite design.

ASSUNTO(S)

martensitic transformation experiments design planejamento de experimentos sliding wear transformação martensítica austenitic stainless steels desgaste por deslizamento aços inoxidáveis austeníticos

ACESSO AO ARTIGO

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