Abstract
Nanoindentation measurements were performed for Fe-C based martensitic steels, and then the strengthening factors such as grain boundary effect were evaluated. Nanohardness of the matrix of the martensite is lower than that expected from macroscopic hardness, indicating that the grain boundary effect is significant for the macroscopic strength of the Fe-C martensite. A remarkable decrease of the grain boundary effect was found at the tempering temperature of 673 K, which is due to a disappearance of film-like carbides on grain boundaries. These results will be discussed in light of the interpretations of grain boundary strengthening.
| Original language | English |
|---|---|
| Pages (from-to) | 4113-4116 |
| Number of pages | 4 |
| Journal | Materials Science Forum |
| Volume | 475-479 |
| Issue number | V |
| DOIs | |
| Publication status | Published - Jan 1 2005 |
| Event | PRICM 5: The Fifth Pacific Rim International Conference on Advanced Materials and Processing - Beijing, China Duration: Nov 2 2004 → Nov 5 2004 |
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering