Carbon steels can be heat treated to produce different microstructural variations and mechanical properties. At high temperatures the material plasticity strength influenced by diffusional effects like Portevin-Le Chatelier effect, leading a commonly observed increased at elevated temperatures. The are chemical composition, but also treatment history that affects local composition especially co...

In this study, the working environment of GH4720Li alloy was simulated using a dynamic compression test with strain rate range 0.01–4000 s-1 and temperature 20–1000 °C, its mechanical properties under operating conditions were studied. Based on signifi cant volume data, it observed that there an abnormal stress peak in owing to third aging. The aging behavior is irregular bell-shaped curve. add...