応力腐食割れき裂前方における先行水素ぜい化域のEDSによる観察
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概要
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Scanning electron microscopy and energy dispersion spectroscopy were made on the fracture of Al-8%Mg alloy failed under tensile loading after stress corrosion testing. When the alloy is faillured imediately after stress corrosion testing, a wide range of intergranular cracking area is observed which consists of two zones with and without the corrosion trace of chloride. The latter disappears when the alloy is aged at room temperature after stress corrosion testing, because the permeated hydrogen is diffused out. The former region corresponds to the SCC zone and the latter does to the hydrogen embrittled zone. The propagation of stress corrosion cracks is attended with forming the pre-existing hydrogen embrittled zone.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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