Metallographic etching and microstructure characterization of NiCrMoV rotor steels for nuclear power |
| |
Authors: | Peng Liu Feng-gui Lu Xia Liu Yu-lai Gao |
| |
Institution: | 1. School of Materials Science and Engineering, Shanghai University, Shanghai, 200072, China 2. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China 3. Shanghai Turbine Plant, Shanghai, 200240, China
|
| |
Abstract: | The grain size of prior austenite has a distinct influence on the microstructure and final mechanical properties of steels. Thus, it is significant to clearly reveal the grain boundaries and therefore to precisely characterize the grain size of prior austenite. For NiCrMoV rotor steels quenched and tempered at high temperature, it is really difficult to display the grain boundaries of prior austenite clearly, which limits a further study on the correlation between the properties and the corresponding microstructure. In this paper, an effective etchant was put forward and further optimized. Experimental results indicated that this agent was effective to show the details of grain boundaries, which help analyze fatigue crack details along the propagation path. The optimized corrosion agent is successful to observe the microstructure characteristics and expected to help analyze the effect of microstructure for a further study on the mechanical properties of NiCrMoV rotor steels used in the field of nuclear power. |
| |
Keywords: | metallography etching austenite grain size and shape etchants nuclear power plants |
本文献已被 维普 万方数据 SpringerLink 等数据库收录! |
| 点击此处可从《矿物冶金与材料学报》浏览原始摘要信息 |
| 点击此处可从《矿物冶金与材料学报》下载免费的PDF全文 |
|