| Autor: |
Asavavisithchai, Seksak, Wangyao, Panyawat, Tangmon, Fonthip, Tangsatapornpad, Pipat |
| Zdroj: |
Materials Science Forum; March 2017, Vol. 891 Issue: 1 p452-457, 6p |
| Abstrakt: |
The present study aims to investigate the effects of Ni and Cr additions on microstructure of P/M 316L stainless steels. The optimum content of both elements to maximize the oxidation resistance of the stainless steel with minimum σ phase formation and microstructural development in various sintering times are also examined. The 316L samples were produced by homogeneously mixing Ni and Cr powders in various contents, followed by cold compaction at high pressure for 30 s. The solutioning process was performed at 1300°C for 45 s under hydrogen atmosphere. The sintering temperature was at 800°C and the sintering times were selected at 200, 400 and 600 hrs, in order to simulate working conditions. The development of microstructure was examined through optical microscope. It is found that the addition of Ni and Cr resulted in the formation of different porosity contents. The porosity increases when the content of the powders increases. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
