Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
Metal fatigue testing simulates real-world conditions to verify material durability. Understanding their macroscopic mechanical properties becomes crucial as performance requirements for metals increase. This study evaluates the temperature dependence of fatigue properties in Ni alloy plating films using a custom small uniaxial tensile fatigue tester. Firstly, quasi-static tensile tests were conducted to obtain tensile strength value at room temperature and 150°C. Secondly, fatigue tests were conducted using a load control method using a sine wave with a frequency of 10Hz or 20Hz at each temperature. The set stress value was set to 50-90% of the reference value (tensile strength value) obtained in the quasi-static tensile test. Combined with the results of stress amplitude and number of cycles, along with post-test CCD observations, are compared to discuss the fracture mechanism.
