| JIANG Ming,LI Guo-xi,LIU Chang-sheng,ZHENG Yi-ran.Study on the Microstructure and Properties of 55 %AI-Zn Alloy Coated Un-Hardened and Tempered N80 Steel[J],36(5):4-7 |
| Study on the Microstructure and Properties of 55 %AI-Zn Alloy Coated Un-Hardened and Tempered N80 Steel |
| Received:June 10, 2007 Revised:October 10, 2007 |
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| DOI： |
| KeyWord:Hot dipping 550-/o Al-Zn alloy Un-hardened and tempered N80 steel Microstructure Corrosion resistance Mechanical properties |
| Author | Institution |
| JIANG Ming |
Research Institute of Materials, Northeastern University, Shenyang , China |
| LI Guo-xi |
Research Institute of Materials, Northeastern University, Shenyang , China |
| LIU Chang-sheng |
Research Institute of Materials, Northeastern University, Shenyang , China |
| ZHENG Yi-ran |
Research Institute of Materials, Northeastern University, Shenyang , China |
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| Abstract: |
| A hot dipping 550-/o Al-Zn alloy coating was produced on the un-hardened and tempered N80 steel by two-step flux method, to improve the corrosion resistance in oil field. On the base, the microstructure of hot dipping 55% Al-Zn alloy coating and the corrosion resistance in NaCl solution of the alloy-coated steels were analyzed. And the comparison of the mechanical properties of N80 steels before-and-after coating was carried out. The results show that the microstructure of 550-/o Al-Zn coating is composed of an Al-Zn alloy overlay and a intermetallic layer. After hot dipping 55% Al-Zn alloy, the corrosion resistance in NaCl solution and mechanical properties of the alloy-coated steels can be greatly improved. The investigations indicat that it is feasible to use hot dipping 550-/o Al-Zn process to improve the corrosion resistance of N80 steel. |
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