| 硼对2.25Cr—1.0Mo钢热塑性的影响 |
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| 引用本文： | 沈冬冬,陈珊,贾涓,郭爱民,袁泽喜. 硼对2.25Cr—1.0Mo钢热塑性的影响[J]. 武汉科技大学学报(自然科学版), 2001, 24(4): 349-352 |
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| 作者姓名： | 沈冬冬 陈珊 贾涓 郭爱民 袁泽喜 |
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| 作者单位： | [1]武汉科技大学，湖北武汉430081 [2]武汉钢铁（集团）公司，湖北武汉430080 |
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| 摘 要： | 采用Gleeble-2000热模拟试验机研究了2.25Cr-1.0Mo钢的高温力学性能。探讨了硼对高温力学性能的主要影响，结合溶质原子晶界偏聚理论分析了硼对高温力学性能的影响机制，研究中发现，在连铸过程中，硼添加到钢中，显著推迟了选共析铁素体的析出，抑制了P，S等元素在晶界的偏聚。根据研究结果，结论向钢中加入微量元素硼，这样可以控制2.25Cr-1.0Mo钢的表面裂纹产生，提高产品质量和成材率。
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| 关 键 词： | 2.25Cr－1.0Mo钢 硼 高温热塑性 先共析铁素体 铬钼合金钢 连续铸钢 |
| 文章编号： | 1001-4985(2001)04-0349-04 |
| 修稿时间： | 2001-08-08 |
Effects of Boron Addition on Hot Ductility of 2.25Cr-1. 0Mo Steel |
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| SHEN Dong dong ,CHEN Shan ,JIA Juan ,GUO Ai min ,YUAN Ze xi. Effects of Boron Addition on Hot Ductility of 2.25Cr-1. 0Mo Steel[J]. Journal of Wuhan University of Science and Technology(Natural Science Edition), 2001, 24(4): 349-352 |
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| Authors: | SHEN Dong dong CHEN Shan JIA Juan GUO Ai min YUAN Ze xi |
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| Affiliation: | SHEN Dong dong 1,CHEN Shan 1,JIA Juan 1,GUO Ai min 2,YUAN Ze xi 1 |
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| Abstract: | The high temperature mechanical properties of 2.25Cr 1.0Mo steel were investigated by Gleeble 2000 thermal simulation machine. The effects of boron on the steel's high temperature mechanical properties were investigated during the continuous casting process; the mechanism was discussed by means of grain boundary segregation theory. It is found that the pre eutectoid ferrite is retarded by addition of B element and the segregation of P and S on the grain boundary is restrained. It is suggested that with the addition of boron , the formation of surface cracks on 2.25Cr 1.0Mo steel is controlled and the product quality and yield of casting slab can be raised. |
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| Keywords: | Cr 1.0Mo steel boron hot ductility pre eutectoid ferrite |
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