Microstructures of Carbon Steel/High Chromium Iron Composites Prepared by Centrifugal Casting-Hot Rolling Process

Liu Fei; Jiang Yehua; Cen Qihong

doi:10.15980/j.tzzz.2013.08.009

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Microstructures of Carbon Steel/High Chromium Iron Composites Prepared by Centrifugal Casting-Hot Rolling Process
Vol. 33, Issue 8, Pages: 769-772(2013)
Published： 2013 ，
DOI： 10.15980/j.tzzz.2013.08.009

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[1]刘飞,蒋业华,岑启宏.离心铸造-热轧制备碳钢/高铬铸铁复合材料[J].特种铸造及有色合金,2013,33(08):769-772.

Liu Fei, Jiang Yehua, Cen Qihong. Microstructures of Carbon Steel/High Chromium Iron Composites Prepared by Centrifugal Casting-Hot Rolling Process. [J]. Special Casting & Nonferrous Alloys 33(8):769-772(2013)
[1]刘飞,蒋业华,岑启宏.离心铸造-热轧制备碳钢/高铬铸铁复合材料[J].特种铸造及有色合金,2013,33(08):769-772. DOI： 10.15980/j.tzzz.2013.08.009.

Liu Fei, Jiang Yehua, Cen Qihong. Microstructures of Carbon Steel/High Chromium Iron Composites Prepared by Centrifugal Casting-Hot Rolling Process. [J]. Special Casting & Nonferrous Alloys 33(8):769-772(2013) DOI： 10.15980/j.tzzz.2013.08.009.

摘要

采用离心铸造-热轧复合工艺制备了碳钢/高铬铸铁/碳钢复合坯料

并通过一道次1150℃热轧制得碳钢/高铬铸铁复合板。借助光学显微镜、线扫描等对复合界面及高铬铸铁层组织进行观察分析。结果表明

离心复合坯料界面有明显过渡区并通过元素扩散作用实现了冶金结合;热轧复合使高铬铸铁中碳化物破碎、细化

并伴随表面形貌的变化。碳化物细化是由于基体塑性流动与碳化物自身溶解的综合作用造成的。

Abstract

Carbon steel/high chromium iron/carbon steel composite slabs were prepared by centrifugal casting process-hot rolling

and then carbon steel/high chromium iron compound plate was successfully prepared with one reduction at 1150℃ by hot rolling.The interface layer of composites and microstructure of high chromium iron were observed and analyzed by optical microscope and line scanning analysis

and microstructure evolution of high chromium iron under different strain rates was analyzed through thermal simulation test.The results show that there exists a clear transition zone in interface layer

and metallurgical bonding can be generated by chemical reactions.The carbide in high chromium iron is crushed and refined with change of the morphology.The refinement of carbide is attributed to the comprehensive effect of matrix’s plastic flow and carbide autolysis.