Table 1 Three kinds of effects caused by thermal treatments and together affecting the microstructure and the mechanical strength (σbb, Eb, and HV) of the samples (effect ①: grain growth, effect ②: recrystallization, effect ③: oxidation reactions)
From: Optimizing the thermal treatment for restoration of brittle archaeological silver artifacts
Temperature (°C) | Recrystallization | Existential effect | Dominant effect | Trend of mechanical strength (σbb/Eb/HV) | Maximum value produced |
|---|---|---|---|---|---|
200–350 | – | ① | ① | ↑ | – |
350–500 | Low efficient | ①②③ | ①② | ↑ | S500 |
500–750 | Low efficient | ①②③ | ③ | ↓ | |
750–800 | Highly efficient | ①②③ | ② | ↑ | S800 |
800–900 | Highly efficient | ①②③ | ③ | ↓ |