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| Cr-Mn-N奥氏体-铁素体不锈钢的空蚀行为 | |
| 引用本文： | 柳伟,郑玉贵,刘常升,姚治铭,柯伟. Cr-Mn-N奥氏体-铁素体不锈钢的空蚀行为[J]. 金属学报, 2003, 39(1): 85-88 |
| 作者姓名： | 柳伟 郑玉贵 刘常升 姚治铭 柯伟 |
| 作者单位： | 1. 中国科学院金属研究所金属腐蚀与防护国家重点实验室,沈阳110016;东北大学材料与冶金学院,沈阳110004 2. 中国科学院金属研究所金属腐蚀与防护国家重点实验室,沈阳110016 3. 东北大学材料与冶金学院,沈阳110004 |
| 基金项目： | 国家自然科学基金重点项目59831030，国家重点基础研究发展规划项目资助G19990650 |
| 摘 要： | 利用超声振荡空蚀实验机对Cr-Mn-N奥氏体－铁素体不锈钢进行了空蚀研究。结果表明，低硬度Cr-Mn-N不锈钢的抗空蚀性能高于高硬度的0Cr13Ni5Mo不锈钢。空蚀过程中，Cr-Mo-N奥氏体－铁素体不锈钢中的铁素体优先脱落，空蚀表面的铁素体含量由19％迅速降低到6．9％后保持稳定。奥氏体易于在铁素体脱离后形成的蚀坑处开始脱落，加工硬化是该不锈钢吸收空蚀冲击能量的一个重要途径，是其硬度较低却表面出良好抗空蚀性能的重要原因。 |
| 关 键 词： | Cr－Mn－N奥氏体－铁素体不锈钢 空蚀 加工硬化 水轮机 过流部件 |
| 文章编号： | 0412-1961(2003)01-085-04 |
| 收稿时间： | 2002-03-20 |
| 修稿时间： | 2002-03-20 |
CAVITATION EROSION BEHAVIOR OF Cr-Mn-N AUSTENITE-FERRITE STAINLESS STEEL |
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| LIU Wei,ZHENG Yugui,LIU Changsheng,YAO Zhiming,KE Wei. CAVITATION EROSION BEHAVIOR OF Cr-Mn-N AUSTENITE-FERRITE STAINLESS STEEL[J]. Acta Metallurgica Sinica, 2003, 39(1): 85-88 | |
| Authors: | LIU Wei ZHENG Yugui LIU Changsheng YAO Zhiming KE Wei |
| Affiliation: | State Key Laboratory for Corrosion and Protection, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110016; School of Materials & Metallurgy, Northeastern University, Shenyang 110004 |
| Abstract: | The cavitation erosion behavior of Cr-Mn-N austenite-ferrite stainless steel was investigated by ultrasonic vibration cavitation erosion equipment. The results show that the resistance of Cr-Mn-N stainless steel to cavitation erosion is superior to that of OCrl3Ni5Mo stainless steel although Cr-Mn-N stainless steel has lower hardness. The ferrite phase in the surface of Cr-Mn-N steel is quickly removed when it is damaged by cavitation erosion, and its volume content in the surface of Cr-Mn-N steel quickly decreased from 19% to 6.9%, then keeps invariable. The austenite is prone to remove from the pits left by ferrite removal. Work hardening is an important way for Cr-Mn-N stainless steel to absorb cavitation erosion impact energy, which makes Cr-Mn-N stainless steel exhibit superior resistance to cavitation erosion. |
| Keywords: | Cr-Mn-N austenite-ferrite stainless steel cavitation erosion work hardening |
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