The researchers studied how Type 316 stainless steel behaves under high temperatures to help design materials for fatigue resistance. They tested the steel at different temperatures and found that holding the steel at high strain levels reduced its fatigue life. They also discovered that a certain aging process improved the steel's resistance to fatigue at very high temperatures. Overall, they found that a linear damage rule and strain-partitioning method can be used to assess cumulative damage from both creep and fatigue in the steel.