Influence of thin slab casting on the properties of microalloyed steel for high cold forming requirements

被引：3
|
作者：
Engl, B [1 ]
Klinkenberg, C [1 ]
机构：
[1] Thyssen Krupp Stahl AG, D-47161 Duisburg, Germany
来源：
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON MICROALLOYING IN STEELS | 1998年 / 284-2卷
关键词：
thin slab casting; direct rolling; TiN precipitation; grain size;
D O I：
10.4028/www.scientific.net/MSF.284-286.501
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The grain refining influence of a TiN-precipitation during conventional continuous casting is already well established /1/. During direct hot processing of thin slabs, TiN-precipitation should occur in the liquid phase during solidification /2, 3/ and in the austenite /4/. Various experiments have been carried out in order to examine the effect of a TiN-precipitation before and during hot rolling of thin slab casted Ti- and TiNb- microalloyed high strength structural steels. The precipitation behaviour has been determined by TEM investigations. The samples show a large variety of TiN and Ti(N,C) precipitates. Number and size of the precipitates are depending on the holding and rolling-start temperatures. The impact of the individual hot rolling conditions on precipitation state, grain size as well as strength- and toughness-properties have been determined.
引用
收藏
页码：501 / 508
页数：8
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