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首页> 外文期刊>Journal of Materials Engineering and Performance >Formability, Microstructure and Properties of CxCrNiV Low-Alloy Steel Fabricated by Laser Melting Deposition
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Formability, Microstructure and Properties of CxCrNiV Low-Alloy Steel Fabricated by Laser Melting Deposition

机译：激光熔化沉积制造CXCRNIV低合金钢的可成型性，微观结构和性能

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摘要

In this paper, three CrNiV series low-alloy steel with different C contents were fabricated by laser melting deposition (LMD) technique. Subsequently, the formability, microstructure and properties of LMD CxCrNiV low-alloy steel were evaluated. The results are as follows: with the increase in C content, the formability of low-alloy steel has decreased. All the samples were mainly composed of alpha-Fe (martensite) phase, and carbides were found to be dispersively distributed in the microstructure. As the C content increased, the martensite lath was remarkably refined, and the average grain size decreased from 2.76 to 2.33 mu m. The tensile strength of the deposited samples increased by 21.58%, and the yield strength increased by 44.68%. As the formability of the deposited sample decreased, the elongation decreased by 35.93%. The average microhardness of deposited samples increased by 26.76%. When the content of C is higher, abrasion-resistant framework can be formed between carbides, and the peeling phenomenon during wear will be greatly reduced, the wear resistance is improved by 86.78%.
机译：本文采用激光熔化沉积（LMD）技术制造了三种CRNIV系列低合金钢，具有不同的C含量。随后，评价LMD CXCRNIV低合金钢的可成形性，微观结构和性能。结果如下：随着C含量的增加，低合金钢的可成形性降低。所有样品主要由α-Fe（马氏体）相组成，并且发现碳化物被分散地分布在微观结构中。随着C含量的增加，马氏体板岩显着精制，平均粒度从2.76降至2.33亩。沉积样品的拉伸强度增加了21.58％，屈服强度增加了44.68％。随着沉积样品的可成形性降低，伸长率降低了35.93％。沉积样品的平均微硬度增加了26.76％。当C的含量较高时，可以在碳化物之间形成耐磨框架，并且磨损过程中的剥离现象将大大降低，耐磨性提高了86.78％。

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