选择性激光熔炼ZrO2增强24CrNiMoY合金钢的组织与性能

IF 1.9 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Powder Metallurgy Pub Date : 2018-09-07 DOI:10.1080/00325899.2018.1515322

Q. Xia, Suiyuan Chen, Chaofan Shi, Zhuang Li

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引用次数: 3

摘要

对选择性激光熔炼（SLM）制备24CrNiMoY合金钢的工艺参数进行了优化。在24CrNiMoY合金钢粉末中加入不同含量的氧化锆粉末。在最佳工艺参数下，使用各种现代分析方法对制造的样品进行了表征。结果表明，24CrNiMoY合金钢的主要相组成为准组织铁素体（PF）和粒状贝氏体（GB）。添加氧化锆后，开始出现Lath贝氏体（LB），并且随着氧化锆的增加，LB的含量先增加后减少。当氧化锆含量为0.3%时，24CrNiMoY合金钢的平均显微硬度达到最大值，为374 HV。此外，抗拉强度为811 MPa，伸长率为6.7%，断口表现为韧性断裂。

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Microstructure and properties of ZrO2-reinforced 24CrNiMoY alloy steel prepared by selective laser melting

ABSTRACT The process parameters of selective laser melting (SLM) fabricated 24CrNiMoY alloy steel were optimised. Different contents of zirconia powder were added to the 24CrNiMoY alloy steel powder. With the optimum process parameters, the fabricated samples were characterised using various modern analysis methods. The results show that the main phase composition of 24CrNiMoY alloy steel is proecctectoid ferrite (PF) and granular bainite (GB). After the addition of zirconia, Lath bainite (LB) begins to appear, and with the increase of zirconia, the content of LB first increases and then decreases. When the zirconia content is 0.3%, the average micro hardness of the 24CrNiMoY alloy steel reaches the maximum and is 374 HV. In addition, the tensile strength is 811 MPa, the elongation is 6.7%, and the fracture surface shows ductile fracture.

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来源期刊

Powder Metallurgy 工程技术-冶金工程

CiteScore

2.90

自引率

7.10%

发文量

审稿时长

3 months

期刊介绍： Powder Metallurgy is an international journal publishing peer-reviewed original research on the science and practice of powder metallurgy and particulate technology. Coverage includes metallic particulate materials, PM tool materials, hard materials, composites, and novel powder based materials.