Cr极限对P/ m316l奥氏体钢组织和力学性能的影响

IF 1.4 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Science of Sintering Pub Date : 2023-01-01 DOI:10.2298/sos230526048e

M. Erden, Hüseyin Demirtaş, Hussein Oleiwi

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引用次数: 0

摘要

研究了Cr极限对316L合金组织和力学性能的影响。采用粉末冶金(P/M)法制备了5种Cr含量分别为16.8、17.1、17.3、17.8和18.8 wt.%的316L合金。采用扫描电镜(SEM)、光学显微镜(OM)和能谱仪(EDS)进行微观结构研究和物相分析。进行拉伸试验和硬度测量，以评估合金的硬度、强度和延展性。结果表明，Cr的加入影响了合金的孔隙率、晶粒尺寸以及析出相的形成。合金的抗拉强度在17.3 wt.% Cr时达到最大值，随着Cr的添加量的增加而降低。受析出相形成和显微组织变化的影响，塑性随Cr的增加而降低。另一方面，硬度随Cr的增加而增加，与塑性成反比。

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Effect of Cr limits on microstructure and mechanical properties of P/M 316l austenitic steel

This study investigated the effect of the Cr limits on the microstructure and mechanical properties of 316L alloy. Five 316L alloys with varying Cr contents (16.8, 17.1, 17.3, 17.8 and 18.8 wt.%) were produced by the powder metallurgy (P/M) method. Microstructure studies and phase analysis were performed with a scanning electron microscope (SEM), optical microscopy (OM), and energy dispersive spectrometry (EDS). Tensile tests and hardness measurements were performed to evaluate the hardness, strength, and ductility of the alloys. The results showed that Cr addition affected the porosity and grain size of the alloys, as well as the formation of precipitates. The ultimate tensile strength reached a maximum at 17.3 wt.% Cr and then decreased with further Cr addition. Ductility decreased with increasing Cr under the influence of precipitates formed and changes in microstructure. On the other hand, the hardness increased with increasing Cr inversely to the ductility.

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来源期刊

Science of Sintering 工程技术-材料科学：硅酸盐

CiteScore

2.50

自引率

46.70%

发文量

审稿时长

3.3 months

期刊介绍： Science of Sintering is a unique journal in the field of science and technology of sintering. Science of Sintering publishes papers on all aspects of theoretical and experimental studies, which can contribute to the better understanding of the behavior of powders and similar materials during consolidation processes. Emphasis is laid on those aspects of the science of materials that are concerned with the thermodynamics, kinetics and mechanism of sintering and related processes. In accordance with the significance of disperse materials for the sintering technology, papers dealing with the question of ultradisperse powders, tribochemical activation and catalysis are also published. Science of Sintering journal is published four times a year. Types of contribution: Original research papers, Review articles, Letters to Editor, Book reviews.