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| 纳米晶304不锈钢板材的深度轧制技术及其力学与腐蚀性能研究进展 |
| The Progress on Mechanical and Corrosion Properties of Nanocrystalline 304 Stainless Steel Plate Produced by Severe Rolling Technique |
| Received:April 03, 2017 Revised:May 10, 2017 |
| DOI：10.3969/j.issn.1674-6457.2017.03.001 |
| 中文关键词: 深度轧制技术 304不锈钢 力学性能 腐蚀性能 |
| 英文关键词: severe rolling technique 304 stainless mechanical properties corrosion properties |
| 基金项目:国家自然科学基金（51171199） |
| Author Name | Affiliation | | WANG Sheng-gang | Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | | SUN Miao | Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | | LONG Kang | Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China |
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| 中文摘要: |
| 介绍了采用深度轧制技术制备的纳米晶304不锈钢板材的力学与腐蚀性能。与普通304不锈钢相比，纳米晶304不锈钢的屈服和抗拉强度同时提高，且延伸率30%以上，拉伸性能提高。相同变幅度条件下，纳米晶304不锈钢应变疲劳的疲劳寿命和疲劳强度同时提高，抗应变疲劳性能提高。在650 ℃下、NaCl-Na2SO4混合熔盐和不同浓度盐酸溶液中，纳米晶304不锈钢局部腐蚀阻力提高、腐蚀速度减少并形成致密氧化膜，耐腐蚀性能提高。从纳米晶和普通304不锈钢的价电子结构以及氧化膜电子结构的角度，分析了纳米晶304不锈钢耐腐蚀性能提高的本征因素。 |
| 英文摘要: |
| The mechanical and corrosion properties of nanocrystalline 304 stainless steel (BN-SS304) plate produced by severe rolling technique are introduced in this paper. Compared with conventional polycrystalline 304 stainless steel (CP-SS304) counterparts, the yield and tensile strengths of BN-SS304 are higher than those of CP-SS304 respectively, and the elongation of BN-SS304 is larger than 30%, these results indicate that the tensile properties of BN-SS304 is improved. Under the same strain amplitude, the fatigue life and strength of BN-SS304 were simultaneously enhanced during strain fatigue at room temperature, which means that the strain fatigue resistance of BN-SS304 is improved. In 650 ℃ NaCl-Na2SO4 mixed molten salt and different-concentration HCl solutions, the enhanced localized corrosion resistance, the decrement of corrosion rate and formation of compact oxide film, can demonstrate that the corrosion resistance of BN-SS304 is enhanced at these corrosion cases. In this work, authors understand the intrinsic factors responsible for the enhanced corrosion resistance of BN-SS304 at the angle of its valence electron structures and electronic structures of oxide film. |
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