On a significance of microstructure in fatigue strength and small fatigue crack growth of Ti-6Al-4V alloy.
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概要
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The fatigue strength was investigated in Ti-6Al-4V alloy with several kinds of microstructures. It is significantly affected by several kinds of factors relating to microstructures, especially by size of equiaxial primary α grain and volume fraction of α phase. The effects of microstructures are discussed, based on observation of the crack initiation sites. The small fatigue crack growth behavior is also investigated, by employing a replication technique. The rates of small crack growth in all materials, in which the microstructure also plays an important role, are notably higher than those of long crack. It is also found that the information on the microstructure dependence in large crack growth is not always applicable to that in small crack growth.
- 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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