Abstract
Laser melting of thin plate, made of 5Cr4Mo3SiMnVAl(012Al) die steel with thickness of 0. 8mm, was carried out by the use of pulsed Nd: YAG laser. The changes in phase and chemical composition of laser-melted zone were evaluated by using XRD, TEM and EPMA methods. The results show that although the phases of 012Al die steel before and after pulsed Nd:YAG laser melting are α-Fe(Martensite) and γ-Fe(Austenite), the position of X-ray diffraction peak and the volume of remained austenite are different. The particles of AIN impurity, V4C3 carbide, Mo6C carbide with a long plate shape, and the plate-like martensite are existed in the laser-melted zone. The distribution of alloying elements in the laser-melted zone is high chemical homogeneity.
| Original language | English |
|---|---|
| Pages (from-to) | 327-330 |
| Number of pages | 4 |
| Journal | Zhongguo Jixie Gongcheng/China Mechanical Engineering |
| Volume | 17 |
| Issue number | SUPPL. |
| State | Published - Oct 2006 |
Keywords
- Chemical composition
- Die steel
- Laser melting
- Phase