完全珠光体压实石墨铸铁的显微硬度极值

IF 1.3 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Cast Metals Research Pub Date : 2020-09-02 DOI:10.1080/13640461.2020.1832308

J. Lacaze, C. Moussa, Y. Thébault, W. Guesser

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引用次数: 3

摘要

为了提高铸铁的机械强度，通过与锡、铜和锰合金化来寻求完全珠光体基体。这尤其适用于这里考虑的压实石墨铁。虽然四种完全珠光体合金的宏观和微观硬度平均值相似，但高铜含量和低锡含量合金的最大显微硬度值非常高，显著高于相应的平均值。这些值可能被视为材料中的硬点，这肯定会损害可加工性。对这些极值原因的讨论为进一步研究开辟了方向。

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Extrema of micro-hardness in fully pearlitic compacted graphite cast iron

ABSTRACT For improving the mechanical strength of cast irons, a fully pearlitic matrix is sought by alloying with tin, copper and manganese. This applies in particular to the compacted graphite irons considered here. While average macro- and micro-hardness values were similar for the four fully pearlitic alloys under study, it was found that high copper and low tin content showed some very high maximum micro-hardness values, significantly higher than the corresponding mean. Such values may be seen as hard points in the material that would certainly impair machinability. Discussion of the reasons for these extreme values opens directions for further studies.

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来源期刊

International Journal of Cast Metals Research 工程技术-冶金工程

CiteScore

2.70

自引率

7.10%

发文量

审稿时长

7.5 months

期刊介绍： The International Journal of Cast Metals Research is devoted to the dissemination of peer reviewed information on the science and engineering of cast metals, solidification and casting processes. Assured production of high integrity castings requires an integrated approach that optimises casting, mould and gating design; mould materials and binders; alloy composition and microstructure; metal melting, modification and handling; dimensional control; and finishing and post-treatment of the casting. The Journal reports advances in both the fundamental science and materials and production engineering contributing to the successful manufacture of fit for purpose castings.