INFLUENCE OF MICROSTRUCTURE ON MECHANICAL PROPERTIES OF TWO SINGLE-BEAD FERRITIC WELD METALS.

被引：0

作者：

Munnig Schmidt-Van Der Burg, M.A. ^{[1
]}

Hoekstra, S. ^{[1
]}

Den Ouden, G. ^{[1
]}

机构：

[1] Philips Research Lab, Eindhoven, Neth, Philips Research Lab, Eindhoven, Neth

来源：

Welding Journal (Miami, Fla) | 1985年 / 64卷 / 03期

关键词：

FERRITES; -; Analysis; METALLOGRAPHY; Microstructures; WELDING;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The microstructures and mechanical properties of two single-bead ferritic weld metals are compared in the as-welded and artificially aged condition. The observed notch toughness behavior of both weld metals can only be understood, if differences between the principal microstructural constituents on a submicron scale are taken into account. These differences appear to be responsible for an increase in hardness and strength, offsetting the beneficial effects of more acicular ferrite and a finer microstructure. The individual constituents can be characterized by microhardness and crack propagation path measurements. The mutual differences are expressed in terms of a fracture sensitivity parameter, indicating a different resistance to cleavage for each microstructural constituent. It is emphasized that transmission electron microscopy, in combination with microanalytical techniques, is needed to reveal further details.

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