|
|
|
| Influencing Factors on Solidification Microstructure of Ferritic Stainless Steel |
| CHANG E1,WANG Li-jiang2 |
1. Research Institute, Baoshan Iron and Steel Co., Ltd., Shanghai 201900, China
2. Stainless Steel Division, Baoshan Iron and Steel Co., Ltd., Shanghai 200431, China |
|
|
|
|
Abstract Columnar crystals in ferritic stainless steel formed during solidification were harmful to steel formablity, so it was important to avoid columnar crystal forming and promote equiaxed crystal forming for ferritic stainless steel. The solidification microstructure under cast test and continuous cast test conditions was analyzed. The results show EMS benefits equiaxed crystal forming and cooling intensity plays an obvious role to columnar crystals forming under both mould cast test and continuous cast test. C and N contents have also effect on 430 solidification structure under cast test. Under the conditions of strong temperature gradient during continuous casting, effect of C and N content on solidification microstructure will be decreased. However, if liquid steel was stirred during continuous casting, C and N contents still play an obvious role on 430 solidification microstructure.
|
|
Received: 31 October 2011
Published: 05 September 2012
|
|
|
|
|
|
|
2012, Vol. 47 
