Influence of Silicon Additions on Microstructure and Mechanical Properties of Manganese Bronze Alloys

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-06-10 DOI:10.22068/IJMSE.2063

Prabhakar Kuppahalli, R. Keshavamurthy, P. Sriram, Ahobal Narayana

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引用次数: 1

Abstract

The present investigation aims to synthesize RB031, RB032 Manganese Bronze alloys equivalent to HTB1 and HTB2 alloys with the addition of silicon and to characterize them with the help of Microstructure and Mechanical properties. The methodology involves melting of alloys in a 300kg coreless medium frequency induction furnace, casting them in Permanent and Shell molds with optimum values of Zinc equivalent and retaining their high mechanical properties. The study includes the development and mechanical property measurements of the alloys synthesized. Characterization has been carried out using optical microscopy and scanning electron microscopy with EDAX analysis for investigation of compositional variations and inquisition of hardness measurement & tensile properties. It is concluded from this work that RB032 alloy cast in Permanent molds has superior hardness and tensile properties compared to Shell molds which far exceeds that of NAB (AB2) alloys processed under similar conditions. Further, this investigation includes grain refinement by suitable Heat treatment studies to combat hot tearing since the strength is adequate enough with RB032 exhibiting higher hardness than other two alloys.

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硅添加量对锰青铜合金组织和力学性能的影响

本研究旨在合成添加硅的相当于HTB1和HTB2合金的RB031、RB032锰青铜合金，并借助微观结构和力学性能对其进行表征。该方法包括在300kg无芯中频感应炉中熔化合金，在具有最佳锌当量值的永久和外壳模具中铸造合金，并保持其高机械性能。该研究包括合成合金的发展和力学性能的测量。利用光学显微镜和扫描电子显微镜进行表征，并进行EDAX分析，以研究成分变化和硬度测量及拉伸性能。从这项工作中可以得出结论，与壳牌模具相比，在永久模具中铸造的RB032合金具有优异的硬度和拉伸性能，这远远超过了在类似条件下加工的NAB（AB2）合金。此外，该研究包括通过适当的热处理研究进行晶粒细化，以对抗热撕裂，因为RB032的强度足够，表现出比其他两种合金更高的硬度。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.