Microstructural correlation of cross rolling temperature of AT55 magnesium alloy in mechanical and formability behaviour.

The development of magnesium alloy includes two key aspects, such as microstructure and texture, which play vital roles in mechanical and forming behaviour. In this study, cross-rolled Mg-5Al-5Sn alloy at various temperatures (350 °C, 400 °C, and 450 °C) with a 60% reduction in thickness was investigated. The effect of cross rolling temperature on the Mg-5Al-5Sn alloy microstructure, texture, tensile properties, and formability was studied. The yield strength increases from 114 MPa to 150 MPa with decreasing rolling temperature, which is attributed to grain refinement phenomena. This finding demonstrates that the AT55 Mg alloy possesses an impact on cross rolling temperature, viz. the formability increases with increases in cross rolling temperature. The alloy processed at 350 °C shows better strength and less formability than that of the alloy processed at 450 °C ( lower strength but good formability at room temperature, with an Erichsen value of 4.3 mm).

"Why not psychiatry??" Interns of a medical college in Northern Kerala responds.

PURPOSE: This study is to assess the attitude of the medical interns toward psychiatry, psychiatrists and patients with mental health problems. MATERIALS AND METHODS: A personal data sheet and the Balon et al. questionnaire was used to assess the attitude among medical interns (n = 44) of a medical college in Northern Kerala. RESULTS: There was modestly good attitude toward psychiatry throughout the study. Data were compared between interns who have completed their posting in psychiatry and those who have not. There was no significant difference except for their awareness about consultation liaison services and the authoritative power of psychiatrists in mental health field. The stigma toward psychiatry is on the decline at least among medical professionals, and more interns are interested in taking up psychiatry as a future specialty. CONCLUSION: Although the study has evidenced a positive attitude to psychiatry, there is still room to improve. A clearer picture could be attained by conducting similar studies in a bigger sample size. A structured curriculum and compulsory internship during the undergraduate course have greatly contributed toward building a more positive opinion of the subject.