- 著者
- Hiromoto Kitahara Sho Matsushita Masayuki Tsushida Shinji Ando
- 出版者
- (公社)日本金属学会/(一社)軽金属学会,(一社)資源・素材学会,ナノ学会,(公社)日本金属学会,(一社)日本塑性加工学会,(公社)日本鋳造工学会,日本銅学会,(一社)日本熱処理技術協会,(一社)日本熱電学会,(一社)日本非破壊検査協会,(一社)日本溶射学会,(一社)粉体粉末冶金協会,(公社)腐食防食学会
- 雑誌
- MATERIALS TRANSACTIONS (ISSN:13459678)
- 巻号頁・発行日
- vol.54, no.4, pp.528-531, 2013-04-01 (Released:2013-03-25)
- 参考文献数
- 13
- 被引用文献数
- 3 6
Fatigue crack closure in commercially pure titanium sheets severely deformed using the accumulative roll-bonding (ARB) process were investigated. Sheet processed through 6 cycles of ARB consists of fine equiaxed grains and elongated lamellar grains and shows a high 0.2% proof stress of 790 MPa. Fatigue crack closure was not observed in the ARB processed sheet. The effective threshold stress intensity factor ranges, ΔKth.eff, of the ARB processed sheets and starting sheet are nearly the same. On the other hand, the resistance of the fatigue crack growth rate of the ARB processed sheet is higher than that of the starting sheet. It was found that ARB increases the resistance for the fatigue crack propagation but has no effect on the onset of propagation.