Pt-Rh Alloys: Investigation Of Tensile Strength And Elongation At High Temperatures

• Main Authors: Trumić B., Gomidželović L., Marjanović S., Krstić V., Ivanović A., Dimitrijević S.
• Format: Article
• Language: English
• Published: Polish Academy of Sciences 2015-06-01
• Series: Archives of Metallurgy and Materials
• Subjects: Pt-Rh alloys; high temperature; tensile strength; elongation
• Online Access: http://www.degruyter.com/view/j/amm.2015.60.issue-2/amm-2015-0186/amm-2015-0186.xml?format=INT

In this paper are presented investigation results of tensile strength and elongation of selected alloys from Pt-Rh system. Samples with the content of rhodium in a concentration range of 7-40% (wt.) were studied. Studies were performed in the temperature range 1100-1500°C at a stress of 2-20 MPa. A universal device for measuring hardness was used to measure the Vickers hardness. For investigation of time strength and elongation at high temperatures, the device Mayes MK2 TC/10 was used. It was found that the value of tensile strength increases with increasing rhodium content, and decreases with increasing temperature. Elongation decreases to 7% Rh, then increases with increasing rhodium content to 15% and then slowly decreases again. With increasing temperature there is a slight increase in elongation.