采用低温(430℃)盐浴对304奥氏体不锈钢进行氮化处理,研究了氮化时间对渗氮层组织,显微硬度及耐蚀性的影响.分别用X射线衍射仪(XRD)、表面显微硬度计、光学显微镜分析了渗氮层的相组成、显微硬度、截面形貌和厚度.结果表明,304不锈钢表面的渗氮层厚度和显微硬度都随处理时间的延长而增大.氮化处理1h得到的渗氮层由单一的S相组成.经盐浴渗氮处理的304不锈钢,其耐Cl-点蚀性能得到改善,430℃下氮化4h得到的渗氮层耐蚀性能最好.
参考文献
[1] | Naoki Yasumaru .Low-temperature ion nitriding of austenitic stainless steels[J].Materials transactions,1998(10):1046-1052. |
[2] | WANG J;XIONG J;PENG Q et al.Effects of DC plasma nitriding parameters on microstructure and properties of 304L stainless steel[J].Materials Characterization,2008,60(03):197-203. |
[3] | Yimin Lin;Jian Lu;Liping Wang .Surface nanocrystallization by surface mechanical attrition treatment and its effect on structure and properties of plasma nitrided AISI 321 stainless steel[J].Acta materialia,2006(20):5599-5605. |
[4] | J. Wang;H. Zou;C. Li .The effect of microstructural evolution on hardening behavior of type 17-4PH stainless steel in long-term aging at 350 deg C[J].Materials Characterization,2006(4/5):274-280. |
[5] | 王均,熊计,彭倩,范洪远,王莹,黎桂江,沈保罗.17-4PH不锈钢盐浴复合氮化处理研究[J].核动力工程,2009(03):66-71,110. |
[6] | H. Dong .S-phase surface engineering of Fe-Cr, Co-Cr and Ni-Cr alloys[J].International Materials Reviews,2010(2):65-98. |
[7] | 黎桂江,彭倩,李聪,王莹,高见,陈蜀源,王均,沈保罗.316L奥氏体不锈钢QPQ盐浴复合处理后的显微组织分析[J].金属热处理,2007(10):23-25. |
[8] | 黎桂江,彭倩,李聪,王莹,陈蜀源,王均,沈保罗.QPQ盐浴氮化17-4PH不锈钢的显微组织分析[J].核动力工程,2007(05):59-62. |
[9] | 黎桂江,彭倩,李聪,王莹,高见,王均,沈保罗.高压直流等离子氮化温度对316L不锈钢显微组织和磨损性能的影响[J].核动力工程,2007(05):54-58. |
[10] | Gui-jiang Li;Jun Wang;Qian Peng;Cong Li;Ying Wang;Bao-luo Shen .Influence of salt bath nitrocarburizing and post-oxidation process on surface microstructure evolution of 17-4PH stainless steel[J].Journal of Materials Processing Technology,2008(1/3):187-192. |
[11] | Li GJ;Wang J;Li C;Peng Q;Gao J;Shen BL .Microstructure and dry-sliding wear properties of DC plasma nitrided 17-4 PH stainless steel[J].Nuclear Instruments and Methods in Physics Research, Section B. Beam Interactions with Materials and Atoms,2008(9):1964-1970. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%