| SU Chun,ZHOU Jian-zhong,MENG Xian-kai,YANG Xiang-wei,YANG Lian.Research Progress of Temperature-Assisted Laser Shock Technology[J],45(10):121-128 |
| Research Progress of Temperature-Assisted Laser Shock Technology |
| Received:March 29, 2016 Revised:October 20, 2016 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2016.10.019 |
| KeyWord:laser technology laser shock thermal mechanical coupling micro scale laser shock forming warm laser peening |
| Author | Institution |
| SU Chun |
1.Jiangsu University, Zhenjiang , China;2.Changzhou Institute of Technology, Changzhou , China |
| ZHOU Jian-zhong |
Jiangsu University, Zhenjiang , China |
| MENG Xian-kai |
Jiangsu University, Zhenjiang , China |
| YANG Xiang-wei |
Jiangsu University, Zhenjiang , China |
| YANG Lian |
Changzhou Institute of Technology, Changzhou , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The temperature-assisted laser shock technology developed from the laser shock technology is a high-energy processing and surface treatment technology, which combines thermal mechanical coupling effects. Based on the introduction of working principle and features of the temperature-assisted laser shock technology, the pressure model and time-space distribution characters of laser shock wave and constitutive model of materials under tepidity and high strain rate were analyzed. Two techniques utilizing the temperature-assisted laser shock effects: temperature-assisted micro scale laser shock forming and warm laser peening were mainly introduced. The temperature-assisted micro scale laser shock forming technique was a novel mi cro-processing technique of high energy rate. Under warm conditions, it could make micro structure of metal foil sheet plastic-formed by means of shock-wave pressure induced by the pulse laser and remarkably improve plastic deformation uniformity of micro deep-drawn parts. The forming height was further improved compared with that at room temperature. As a new surface treatment technology for the materials, the warm laser peening technology combining the advantages of thermal mechanical coupling effect in stress strengthening and structure strengthening could obtain the residual compressive stress distribution more stable than that of laser shock processing technology obtained at room temperature. In such case, the thermal corrosion resistance and fatigue properties of materials could be also improved effectively. After summarizing the research status about the temperature-assisted micro scale laser shock forming technology and the warm laser peening technology, the problems existing in current research of the temperature-assisted laser shock processing are pointed out. Finally, expectations of future studies on the technology are brought forward. |
| Close |
|
|
|