6/7/2023 0 Comments Maus pdf ita![]() Finally, the yield strength, UTS and ultimate strength (σ b, in function of strain hardening exponent and natural base e) obtained by different conditions of thermal treatments (175 ☌, 200 ☌ and 225 ☌ for 2h, 4h and 6h) were related to Vickers hardness values. ![]() The results showed the accuracy of this equation with respect to the theoretical one. Afterwards, the measured values of Rockwell hardness (HRF) and Vickers hardness (HV) were related to each other by a simple equation according to theory. Moreover, the relationship derived from ASTM standards and Hollomon parameters were calculated from the engineering stress-strain curves. Firstly, the pre-existing relationships were considered and verified for AlSi10Mg SLMed alloy. Relationships between hardness and yield and ultimate tensile strengths have been calculated by combining Hollo-mon parameters (the strain hardening exponent 'n' and the strength coefficient 'K') for the Selective Laser Melted Al-10SiMg alloy. The problem of finding meaningful relationships between hardness and tensile strength has been addressed for materials produced by additive manufacturing technology. Selective Laser Melted Al10SiMg samples were directly aged at different temperatures and times to establish the best mechanical properties for this alloy.
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