Abstract
With the home-made laser rapid forming system and suitable processing parameter, functionally graded materials (FGMs) were prepared whose compositions continuously gradually changed from 100% 316L to 100% Rene 88 DT. The microstructure of prepared materials was full dense and very fine, its composition and hardness were continuously varied in the 40-mm transition layers. In the transition layers, with Rene 88 DT's percentage composition increased, the degree of hardness and primary dendritic space were varied from 186 Hv, 12.41 μm with 100% 316 L at the bottom to 458 Hv, 18.99 μm with 100% Rene 88 DT in the top.
| Original language | English |
|---|---|
| Pages (from-to) | 567-570 |
| Number of pages | 4 |
| Journal | Zhongguo Jiguang/Chinese Journal of Lasers |
| Volume | 32 |
| Issue number | 4 |
| State | Published - Apr 2005 |
Keywords
- Functionally gradient materials (FGMs)
- Hardness
- Laser rapid forming
- Materials
- Microstructure
- Rene 88 DT high temperature alloy