|About this Abstract
||2019 TMS Annual Meeting & Exhibition
||Aluminum Alloys, Processing and Characterization
||Residual Stress Characterization for Marine Gear Cases in As-cast and T5 Heat Treated Conditions with Application of Neutron Diffraction
||Joshua Stroh, Dimitry Sediako
|On-Site Speaker (Planned)
Mercury Marine has recently implemented an advanced aluminum-silicon alloy (MercalloyTM 362) into a redesigned, lightweight gear case for use in high powered marine engines. The company is currently in the process of tuning the manufacturing process to reduce the evolution of residual stress during the casting process. This study presents the residual stress characterization of machined and non-machined, as-cast and T5 heat treated marine gear cases using neutron diffraction (ND). A comparison of the results for each gear case revealed that the machining process increases the stress by approximately 40%. However, the ND results also indicate that heat treatment was successful in alleviating approximately 50% of the residual stress in the machined and non-machine gear cases. The results from this study provide the company with valuable information for further optimizing the design and manufacturing technologies for the highly advanced marine gear case.
||Planned: Light Metals