自制了不同含量及粒径的WC高锰钢焊条，采用火焰堆焊获得了高锰钢堆焊层，运用金相分析、X射线衍射分析、磨损试验等方法研究了WC颗粒含量和粒径对堆焊层组织及耐磨性能的影响。结果表明：堆焊层中WC颗粒与基体界面结合良好，组织为奥氏体枝晶和莱氏体共晶碳化物；随着WC含量的增加，组织由奥氏体等轴晶转变为枝晶，枝晶间合金碳化物及共晶组织随之增多；小粒径颗粒对堆焊层组织的影响略于大粒径颗粒的；WC颗粒显著提高了高锰钢堆焊层的耐磨性能。
A series of high manganese steel electrodes with different WC contents and particles were self- prepared and high manganese steel surfacing layer was obtained by flame surfacing, and the effects of the WC / contents and size on microstructure and wear resistance of surfacing layer were studied by optical microstructure analysis, X-ray diffraction analysis and wear resistance testing. The results show that the WC particles were well combined to the substrate and the microstructure was austenitic dendrite and ledeburite eutectic carbide. The microstructure changed from austenite isometrie crystal to dendritic crystal, and the interdendritic alloy carbide and eutectic microstructure increased with the increase of WC content. Comparing with big size WC particle, the effect of small size WC particle had bigger effect on the microstructure of/surfacing layer. The WC particles dramatically enhanced the wear resistance of high manganese steel surfacing layer.
参考文献
| [1] | 高建平,李炎,魏世忠,张万红,龙锐.烧结温度对WC钢结硬质合金覆层/碳钢界面组织及性能的影响[J].机械工程材料,2008(01):21-23,43. |
| [2] | 曾绍连,李卫.碳化钨增强钢铁基耐磨复合材料的研究和应用[J].特种铸造及有色合金,2007(06):441-444. |
| [3] | 刁淑生,梁东图,潘川,储少军,李永林.碳化钨堆焊热保护技术[J].焊接,2000(04):6-10. |
| [4] | 习小明,胡常波.材料的熔点与其颗粒半径之间的关系[J].矿冶工程,2007(04):46-49. |
| [5] | 尤显卿,黄曼平,郑玉春,程娟文.电冶熔铸碳化钨钢结硬质合金的微观组织研究[J].矿冶工程,2003(02):87-90. |
| [6] | Petras AMBROZA;Lina KAVALIAUSKIENE .Submerged Arc Welding with Mixed into the Flux Materials Aiming to Obtain Hardened after Tempering Layer[J].Materials Science,2009(1):48-52. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%