熔融金属と接触する固体金属の脆化に影響する若干の要因について : 熔融相と接触する鋼材の脆化 III

概要

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Embrittlement of mild steel in contact with molten copper or copper-tin alloy or zinc-tin alloy, and embrittlement of tin or lead in contact with mercury were examined. Several factors affecting embrittlement became clear as follows. In general, embrittlement of this kind, namely fracturing by penetration of liquid occured severely at a comparatively low working speed, but hardly at an impact working speed. Embrittlement of cold-rolled steel under the recrystalization temperature becomes less liable to occur as rolling reduction increased, and the cracks run along strained ferrite-grain boundaries. Fine-grained lead was not embrittled by mercury, while coarse-grained lead was embrittled by mercury. The coarse-grained lead, however, did not show any brittleness in air. Fracturing by penetration of liquid occurred only by the stress at a difinite value, and did not occur by a lower stress. This was shown by the constant tensile load tests of tin in mercury.
社団法人日本鉄鋼協会の論文
1961-02-01