热轧制备高铬铸铁/低碳钢双金属的性能

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materiali in tehnologije Pub Date : 2022-12-08 DOI:10.17222/mit.2022.589

G. Yuan, Xianke Xiao, Fei Zhao

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引用次数: 0

摘要

采用热轧结合的方法制备了高铬铸铁(HCCI)和低碳钢(LCS)包层的双金属复合板材。本文对双金属复合材料的显微组织和力学性能进行了分析。实验结果表明，脆性HCCI层在碳钢包层作用下获得了良好的热塑性变形。热轧后，由于机械和冶金结合，两种金属结合良好，表现出良好的结合。C原子沿界面向上扩散。在LCS侧附近形成脱碳区，在键合界面形成厚度约为2 ~ 3µm的珠光体扩散带。双金属复合材料抗拉强度为249.5 MPa, HCCI侧出现解理断裂。在弯曲试验中，观察到双金属复合材料中HCCI的界面分层裂纹和隧道裂纹。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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PROPERTIES OF HIGH-CHROMIUM CAST IRON/LOW-CARBON STEEL BIMETAL FABRICATED BY HOT-ROLLING

A bimetal composite plate including a high-chromium cast iron (HCCI) and low-carbon steel (LCS) cladding was fabricated with hot-rolling bonding in the form of a sandwich structure. In this work, the microstructure and mechanical properties of the bimetal composite were analyzed. Experimental results showed that the brittle HCCI layer achieved good thermoplastic deformation under the action of carbon-steel cladding. After hot rolling, the two metals were well bonded due to mechanical and metallurgical bonding, showing an excellent joint. C atoms diffused uphill the interface. A decarburization area was formed near the LCS side and a fine pearlite diffusion band with a thickness of about 2–3 µm was formed on the bonding interface. The tensile strength of the bimetal composite was 249.5 MPa, and a cleavage fracture appeared on the HCCI side. Interfacial delamination cracks and tunnel cracks of the HCCI were observed in the bimetal composite during a bending test.

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来源期刊

Materiali in tehnologije 工程技术-材料科学：综合

CiteScore

1.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal MATERIALI IN TEHNOLOGIJE/MATERIALS AND TECHNOLOGY is a scientific journal, devoted to original papers and review scientific papers concerned with the areas of fundamental and applied science and technology. Topics of particular interest include metallic materials, inorganic materials, polymers, vacuum technique and lately nanomaterials.