著者

前 健彦 堀 茂徳

出版者

一般社団法人 軽金属学会

雑誌

軽金属 (ISSN:04515994)

巻号頁・発行日

vol.34, no.1, pp.3-7, 1984-01-31 (Released:2008-07-23)

参考文献数

7

被引用文献数

5 6

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The embrittlement of aluminum by liquid gallium was investigated by measurements of a tensile test, a microscope and EPMA methods. The fracture stress of aluminum, coated with gallium of less than 1 mg, or tested within 1 min after coating, varied widely. The fracture stress of aluminum decreased with increase in holding time after coating with gallium. The fracture stress of specimen removed gallium on surface was greater than that with gallium adhered to surface. The fracture stress of aluminum increased with increase in holding time at 35°C again, when gallium on its surface was removed after holding at 35°C for 300 min after coating. Ductile to brittle transition appeared within a range of temperature between 23°C and 27°C°Cunder the test in l min after coated with gallium. This temperature range was almost independent of strain rate. In the tensile test after holding at 35°C for long time, ductile to brittle transition was within the range of temperature between 0°C and 27°C.