Abstract
A damage analysis is performed for a low alloy 15MnMoVNRe steel and its corresponding simulated coarse-grain heat affected zone. Simulation is verified by observing the material microstructure with different martensite/austenite contents and shapes. The potential difference monitored by alternating current before and after damage is used for quantifying a damage parameter. While the damage increased linearly with strain for the base steel, the behavior for the coarse-grain heat affected zone is non-linear. The critical values of damage and fracture strain of the heat affected zone exhibiting strain softening are lower than those for the base steel. In general, the analytical results agreed well with those found by experiments.
| Original language | English |
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| Pages (from-to) | 23-28 |
| Number of pages | 6 |
| Journal | Theoretical and Applied Fracture Mechanics |
| Volume | 21 |
| Issue number | 1 |
| DOIs | |
| State | Published - Aug 1994 |