| ????????????????P20??????????? |
| |
| 引用本文： | ?????裬??????????????????????????.????????????????P20???????????[J].钢铁研究学报,2014,26(10):74-80. |
| |
| 作者姓名： | ?????裬????????????????????????¿? |
| |
| 作者单位： | 1. ?????????????, ???? ??? 450052 ; 2. ??е????о??????????????о??????????????????????????????, ???? 100083 |
| |
| 摘 要： |
|
| 关 键 词： | P20???????? ??????? ????? ??? |
Effect of Heat Treatment Process on Corrosion Performance of Plastic Die Steel P20 |
| |
| ZHAO Peng-xiang,ZUO Xiu-rong,CHEN Yun-bo,WANG Miao-hui,LI Yuan,CHEN Kang.Effect of Heat Treatment Process on Corrosion Performance of Plastic Die Steel P20[J].Journal of Iron and Steel Research,2014,26(10):74-80. |
| |
| Authors: | ZHAO Peng-xiang ZUO Xiu-rong CHEN Yun-bo WANG Miao-hui LI Yuan CHEN Kang |
| |
| Affiliation: | 1. School of Physical Science and Engineering, Zhengzhou University, Zhengzhou 450052, Henan, China ;2. Advanced Manufacture Technology Center and State Key Lab of Advanced Forming Technology and Equipment, China Academy of Machinery Science and Technology, Beijing 100083, China |
| |
| Abstract: | Effect of heat treatment process on corrosion performance of plastic die steel P20 and mechanism for corrosion were studied by electrochemical test, electrochemical impedance spectrum test, weight loss test, neutral salt spray test, SEM, EDS and XRD. It is found that the steels with bainite/martensite quenched at 860?? by air cooling or martensite quenched at 860?? by oil cooling have better corrosion resistance than the steel with ferritic/martensitic quenched at 785?? by oil cooling. After the samples with bainite/martensite or martensite are tempered at 450 and 620?? respectively, martensite and bainite decompose and a lot of carbides precipitate, leading to a poor corrosion resistance. After electrochemical test, the outer layer of corrosion product on the surface of the samples is loose FeOOH and the inner layer is relatively dense Fe3O4. The anode reaction is mainly dissolution of Fe and the cathode reaction is generation of hydrogen. Pitting mainly occurs around inclusions in NaCl solution of 0. 5mol/L. |
| |
| Keywords: | P20 plastic die steel Heat treatment process Corrosion resistent Pitting |
|
| 点击此处可从《钢铁研究学报》浏览原始摘要信息 |
|
点击此处可从《钢铁研究学报》下载全文 |
|
