研究了喷射成形超高碳钢的显微组织,表征了其超塑性变形的力学特征,喷射成形超高碳钢的最佳变形温度为820℃,最佳应变速率为2.5×10-4s-1.测定了超塑性等温锻造后喷射成形超高碳钢的室温力学性能,并观察了其显微组织.结果表明,超塑性等温锻造工艺使超高碳钢的组织得到了致密化,其原始组织主要是均匀、细密的珠光体,锻造后则大部分转变为细小的等轴铁素体晶粒以及弥散分布于其上的碳化物的组织.
参考文献
| [1] | Kim WJ.;Sherby OD.;Taleff EM. .Superplasticity of fine-grained Fe-C alloys prepared by ingot and powder-processing routes[J].Journal of Materials Science,1998(20):4977-4985. |
| [2] | Lesure D R .The case for ultrahigh-carbon steels as structural materials[J].Journal of The Minerals,Metals & Materials Society,1993,8:40. |
| [3] | Sherby O D.Ultrahigh carbon steels[J].Journal of Materials,1985(06):50-56. |
| [4] | Singer A R E .Recent developments in the spray forming of metals[J].The International Journal of Powder Metallurgy and Powder Technology,1985,21(03):219-234. |
| [5] | 杨留栓;杨根仓;周尧和 .喷雾沉积快速凝固技术的发展与展望[J].材料科学与工程,1994,12(02):29-33. |
| [6] | Zhang J G;Shi H S;Lin Y J et al.Sun:A method to produce a superplastic ultrahigh carbon steel and its applications[P].Patent of China,2002. |
| [7] | 董成瑞.微合金非调质钢.特殊钢丛书[M].北京:冶金工业出版社,2000 |
| [8] | Lesuer D R;Syn C K;Whttenber J D .Microstructure-property relations in as-extruded ultrahigh carbon steel[J].Metallurgical and Materials Transactions,1999,30:1560. |
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%