@article{oai:fut.repo.nii.ac.jp:00001066, author = {羽木, 秀樹 and Hagi, Hideki}, issue = {44}, journal = {福井工業大学研究紀要}, month = {Jul}, note = {The change in structure of 9Cr-1Mo steel caused by heat-treatment after cold working was investigated on the basis of Vickers hardness test, X-ray diffraction, and SEM observation. Many precipitates of chromium carbide were observed in the surface of cold-rolled specimens. By the heat-treatment at 700℃, the growth of grain and precipitate were observed. We measured Vickers hardness, HV, and the half-value width of X-ray diffraction peak for the specimen heat-treated after the cold-rolling. By heat-treatment at 100-200℃, HV slightly increased, but the half-value width was nearly constant. At the heat-treatment temperature at 200-500℃, Vickers hardness, HV, increased slightly, and the half-value width decreased. These phenomena result from the diffusion of interstitial impurities around dislocations. At 500-700℃, both HV and the half-value width decreased. The decrease in HV and the half-value width is caused by recrystallization, that is, large decrease in dislocation density.}, pages = {53--59}, title = {冷間加工後の熱処理による9Cr-1Mo鋼の組織変化}, year = {2014} }