Ni 多結晶体の動的再結晶過程における結晶粒間の方位関係(熱間加工と再結晶)(<特集>再結晶・粒成長)

概要

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Microscopic observation on dynamic recrystallization in polycrystalline nickel and the orientation analysis of individual grains have been conducted by using electron channeling patterns. Originally existing grain boundaries began to bulge out at a strain of 0.5 εp and new grains began to come out along grain boundaries at a strain of 0.75 εp, where εp is the peak strain corresponding to a maximum flow stress. It was found that only a few grains were produced by a bulging or a multiple twinning process. This is at variance with the observations on single crystals or a coarse-grained austenitic steel. The growth rate of new grains was seemingly independent of the orientation relationships in their growth fronts. This trend is in contrast to the static recrystallization. The reason for this difference is discussed in special reference to the concurrent straining during the recrystallization.
社団法人日本鉄鋼協会の論文
1984-11-01