Effect of heat treatment on hardness and wear behavior of weld deposited Co-Cr-Mo alloy
AUTOR(ES)
Mallik, Mantrala Kedar, Rao, Chalamalasetty Srinivasa, Rao, Vaddi Venkata Sundara Kesava
FONTE
Matéria (Rio J.)
DATA DE PUBLICAÇÃO
2015-06
RESUMO
Metallic materials are generally characterized by the evaluation of hardness and wear resistance of the material at the specified condition. The characterization is necessary for understanding the behavior of the metals, especially alloys, at different conditions. To study the effect of heat treatment on weld deposited Co-Cr-Mo alloy, arc welding process has been used to prepare the samples.Using L9 Orthogonal array of Taguchi method, the samples, in three groups,are heat treated by solution at 1200ºC for 30, 45 and 60minutes followed by water quenching. Two sets of the samples from each groupare aged at 815ºC and 830ºC for 2, 4 and 6 hours. All the samples are then tested for their hardness andwear resistances. Microstructure analysis has been carried out from SEM images of the samples. The experiment results reveal that the differences in heat treatment did not influence the grain size of the samples, but the precipitation of carbides varies from sample to sample. The Co-Cr-Mo alloy samples solutionized at 1200ºC for 60minutes have exhibited high hardness (371.6±2Hv) and wear resistances. For high hardness and wear resistance, high solution time is required. ANOVA has been carried out to identify the best parameters of heat treatment.
Documentos Relacionados
- Effect of Temperature, Electrolyte Composition and Immersion Time on the Electrochemical Corrosion Behavior of CoCrMo Implant Alloy Exposed to Physiological Serum and Hank's Solution
- Behavior of a Co-Cr-Mo biomaterial in simulated body fluid solutions studied by electrochemical and surface analysis techniques
- Effect of processing on microstructure and properties of CoCrMoSi alloy
- Normalizing heat treatment effect on low alloy steel weld metals
- Corrosion Behavior of 316L and Alloy 182 Dissimilar Weld Joint with Post-Weld Heat Treatment