The Effects of Rare Earth Elements (La2O3）on Wear Performance of Cladded SKD61
碩士 === 國立臺灣科技大學 === 機械工程系 === 95 === This thesis studies the effect of rare earth (La2O3) on microstructure morphology and wear resistance of clad layer for SKD61 tool steel cladded with WB powder. In addition, the major factors that influence wear performance of clad layer were found out in this st...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2007
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| Online Access: | http://ndltd.ncl.edu.tw/handle/65kn9e |
| Summary: | 碩士 === 國立臺灣科技大學 === 機械工程系 === 95 === This thesis studies the effect of rare earth (La2O3) on microstructure morphology and wear resistance of clad layer for SKD61 tool steel cladded with WB powder. In addition, the major factors that influence wear performance of clad layer were found out in this study.
According to the results of this study, WB clad layers were strengthened by the precipitation of reinforcing phases. The results show that adding suitable amount of La2O3 can promote microstructure refining and precipitates growing in WB clad layer. Thicker precipitates possess better mechanical interlocking effect and can increase significantly the wear-resistance ability in WB cladding specimens. The wear performance of WB-3.0% La2O3 clad layer was improved obviously. Nevertheless, it should be emphasized that it is suitable to add certain amount of La2O3. And too much La2O3 would not be beneficial to improve the microstructure and wear performance.
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