ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 7

Liquid Metal Embrittlement of 4145 Steel by Lead-Tin and Lead-Antimony Alloys

Breyer, NN
Professor, Illinois Institute of Technology, Chicago, Ill.

Johnson, KL
Metallurgist, Chicago Bridge Ltd, Wembley,

Abstract

Pure lead soldered to the gage section of 200-ksi (1379-MPa) 4145 steel tensile specimens tested at temperatures ranging from room temperature to 700°F (371°C) exhibit a severe loss in ductility between 400 and 680°F (204 and 360°C). The ductility, as measured by reduction of area, recovered at 695°F (368°C), the so-called brittle-to-ductile recovery temperature. This recovery temperature was shifted to higher temperatures in a sensitive manner by relatively small amounts of either tin or antimony added to alloy the externally applied lead.

Keywords:
high temperature tests, tension tests, alloy steels, embrittlement, solders, liquid, metals, brittle, fracture, lead alloys, tin containing alloys, antimony containing alloys

Paper ID: JTE11678J
DOI: 10.1520/JTE11678J
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