根据磁性衬板对奥氏体钢超高硬度的研发需求,在高锰奥氏体钢中添加适量的碳化物形成元素,经热处理的后采用TEM、SEM、XRD等手段研究了固溶时效态高锰奥氏体钢中碳化物的析出行为,以期获得超高硬度奥氏体钢.结果表明:高锰奥氏体钢在固溶时效状态下,组织中均匀析出大量Cr23C6相,其数量在675℃时效时达到饱和,随后开始长大聚集;时效使材料中大量弥散析出约十几纳米的VC颗粒,弥散的VC颗粒与基体间存在共格界面,存在多种共格关系,这种具有共格界面的纳米VC颗粒对材料硬度提高作用非常明显.
参考文献
| [1] | 吴化,徐珊珊.多元变质处理对高锰钢微观结构与性能的影响[J].铸造,2008(01):66-68. |
| [2] | Efstathiou, C;Sehitoglu, H .Strengthening Hadfield steel welds by nitrogen alloying[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2009(1/2):174-179. |
| [3] | Moghaddam, E.G.;Varahram, N.;Davami, P..On the comparison of microstructural characteristics and mechanical properties of high-vanadium austenitic manganese steels with the Hadfield steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2012:260-266. |
| [4] | Zhang FC;Fu RD;Qiu L;Zheng YZ .Microstructure and property of nitrogen-alloyed high manganese austenitic steel under high strain rate tension[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):255-260. |
| [5] | Bliznuk V V;Gavriljuk V G;Kopitsa G P et al.Fluctuations of chemical composition of austenite and their consequence on shape momory effect in FeMn-(Si,Cr,Ni,C,N) alloys[J].Acta Materialia,2002,52(16):4791-4799. |
| [6] | 刘嘉斌,舒康颖,刘向海,刘薇,曾跃武,张升才.再结晶退火对Fe-24Mn-0.7Si-1.0Al TWIP钢组织和硬度的影响[J].材料热处理学报,2011(08):107-112. |
| [7] | 代永娟,米振莉,唐荻,吕建崇.退火温度对Fe-Mn-TWIP钢微观结构的影响[J].材料热处理学报,2011(03):115-119. |
| [8] | 袁子洲,匡毅,陈彦,仇珊.时效处理对超高锰钢组织及力学性能的影响[J].铸造,2004(08):602-605. |
| [9] | Bae D S;Lee S P;Cho Y R et al.Effect of aging treatment on irradiation-induced segregation of high Mn-Cr steel[J].Nonferrous Metals Society of China,2011,21:58-61. |
| [10] | 李鱼飞,罗超,王志钢,任大鹏.退火对V-4Cr-4Ti合金微观组织结构的影响[J].稀有金属,2010(02):172-177. |
| [11] | 黄孝瑛.材料微观结构的电子显微学分析[M].北京:冶金工业出版社,2008 |
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%