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Effect of microstructure on the hardness of ASTM A48 class 20 flaked graphite cast iron
International Journal of Cast Metals Research ( IF 1.4 ) Pub Date : 2022-07-05 , DOI: 10.1080/13640461.2022.2093586
Manojkumar V. Sheladiya 1, 2 , Shailee G. Acharya 3 , Ghanshyam D. Acharya 4
Affiliation  

ABSTRACT

In foundries, it becomes necessary to minimise the machining allowance for economic reasons. It will save resources and costs by reducing the energy and expenses incurred on re-melting, machining and tooling. A deeper understanding of the complicated microstructures developed within about 3.5 mm of the mould-metal interface is necessary. The current research work uses a unique experimental design that involves performing surface and subsurface microscopy and spectroscopy at 0.5 mm intervals from the as-cast surface to a depth of up to 3.5 mm for three samples. The objective is on evaluating microstructure for determining graphite flake size, distribution, grouping, pearlite and ferrite percentage, and different elements. All three samples were subjected to a hardness test, which is a measure of machinability. The relationship between hardness as a single response to percentage presence of elements, graphite distribution and pearlite has been established using statistical analysis.



中文翻译:

显微组织对 ASTM A48 20 级片状石墨铸铁硬度的影响

摘要

在铸造厂,出于经济原因,必须尽量减少加工余量。它将通过减少重熔、机加工和加工所产生的能源和费用来节省资源和成本。有必要对模具-金属界面约 3.5 mm 范围内形成的复杂微观结构进行更深入的了解。目前的研究工作使用了一种独特的实验设计,包括对三个样品以距铸态表面 0.5 毫米的间隔进行表面和亚表面显微镜检查和光谱分析,深度可达 3.5 毫米。目的是评估微观结构以确定石墨薄片的尺寸、分布、分组、珠光体和铁素体百分比以及不同的元素。所有三个样品都进行了硬度测试,这是一种机械加工性的量度。

更新日期:2022-07-05
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