mechanical properties of dissimilar weld joints between gost09ch16n4b (a martensitic stainless steel) and aisi 4130 thin sheets made by gas tungsten arc welding (gtaw) were studied using er410nimo and er100s-g filler metals in post weld heat treated conditions. heat treatment cycles consisted of austenitization at 900, 950 and 1000 °c for 1 h and this was followed by oil cooling and tempering a...

Wear phenomena understanding of implants is a challenge: friction-corrosion of biomaterials, which constitute orthopaedic implants, is a significant issue concerning the aseptic loosening. This work aims at studying AISI 316L/bone cement friction which is a tribological problem related to hip joint cemented prostheses. This study focuses on the ionic strength effect on the tribological behaviou...

1 FCQeI-CIICAp-Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, C.P. 62210, Cuernavaca, Morelos, México. 2 Instituto de Investigaciones Eléctricas, Reforma 113, Col. Palmira, C.P. 62490, Cuernavaca, Morelos, México. 3 Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Avenida Universidad s/n, 62210, Cuernavaca, Morelos, México. Corrosión y Pr...

Paper presents the research of austenitic steel AISI 304after ion nitriding at 400◦C and at t =4h, for the two different variants of samples distribution in the working plasma reactive chamber tube. In order to assess the effectiveness of ion nitriding variants emission spectroscopy – GDOES, surface hardness tests, microstructure research (LM) of nitrided layers were made. It has been found tha...

The article deals with mechanical properties of layers which were created by plasma nitriding technology. Nitrided layers apply to steel AISI 4140 were evaluated by metallographic method, GDOES method, microanalysis method and microhardness method. The trend of mechanical properties was experimentally obtained in dependence on length of cavity during plasma nitriding process. Moreover, the infl...