Microwave sintering response of different grade stainless steels and its influence on metallurgical properties

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

Powder Metallurgy Pub Date : 2021-09-26 DOI:10.1080/00325899.2021.1981656

K. Veera Venkata Nagaraju, S. Kumaran, T. Srinivasa Rao

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引用次数: 2

Abstract

ABSTRACT Ultra-rapid microwave sintering of powder metals will provide fine microstructural features that improve mechanical properties. In present study, three grades of stainless steel powder compacts (316L, 430L, 410) were produced using a uniaxial compaction unit. These compacts were sintered by microwave hybrid heating method at 1300°C (super-solidus region). The densification response, microstructural attributes, and mechanical properties were compared at 30, 45 and 60 min holding times. The compositional analysis was performed with the help of optical emission spectroscopy (OES) and scanning electron microscopy equipped with energy dispersed spectroscopy(SEM-EDS). The results obtained from both spectroscopies are compared for the sintered samples. The correlation of mechanical properties is analysed with evolved microstructural attributes (pore volume, pore shape and pore distribution). The excellent strength of 457 ± 16 MPa, 466 ± 6 MPa and 476 ± 26 MPa with 23 ± 1.3%, 14 ± 1.5% and 11 ± 1% of ductility is observed for sintered AISI 316L, 430L and 410, respectively.

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不同牌号不锈钢的微波烧结反应及其对冶金性能的影响

摘要：粉末金属的超快速微波烧结将提供精细的微观结构特征，从而提高机械性能。在本研究中，使用单轴压实装置生产了三种等级的不锈钢粉末压块（316L、430L、410）。这些压块通过微波混合加热方法在1300°C（超固态区域）下烧结。比较了在30、45和60分钟保温时间下的致密化响应、微观结构属性和机械性能。成分分析是在光学发射光谱（OES）和配备有能量分散光谱（SEM-EDS）的扫描电子显微镜的帮助下进行的。对烧结样品的两种光谱法的结果进行了比较。分析了力学性能与演变的微观结构属性（孔隙体积、孔隙形状和孔隙分布）的相关性。烧结AISI 316L、430L和410分别具有457±16MPa、466±6MPa和476±26MPa的优异强度和23±1.3%、14±1.5%和11±1%的延展性。

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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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.