Recrystallization of cold rolled oxide dispersion strengthened copper during room temperature annealing
Recrystallization of cold rolled oxide dispersion strengthened copper during room temperature annealing
复制标题
冷轧氧化物弥散强化铜室温退火过程中的再结晶
DOI：
10.1016/j.jallcom.2019.05.248
复制
发表时间：
2019
影响因子：
6.2
通讯作者：
Muroga T.
中科院分区：
文献类型：
--
作者：
Aghamiri S.M.S.;Ukai S.;Oono N.;Kasada R.;Noto H.;Hishinuma Y.;Muroga T.
研究了一种新设计的80%室温轧制氧化物弥散强化铜在室温退火过程中的静态不连续再结晶行为。在退火的早期阶段，细小的新取向的纳米/亚微米晶粒在单一黄铜取向的变形晶粒的独特基体中再结晶。当退火时间延长至14个月时，再结晶晶粒的尺寸、面积分数和数密度随着织构的改变而沿着显著增加。对晶界取向差角分布的分析表明，静态回复对再结晶晶粒的形核有重要贡献，小角度晶界向大角度晶界的转变是再结晶晶粒形核的主要原因。此外，再结晶后机械硬度的恒定水平被解释为晶粒尺寸硬化，氧化物颗粒硬化和应变硬化之间的平衡。
Static discontinuous recrystallization was studied during room temperature annealing of a newly designed 80% room temperature rolled oxide dispersion strengthened copper. At early stages of annealing, fine new oriented nanosized/submicron grains were recrystallized in the unique matrix of single brass-oriented deformed grain. Upon longer annealing time up to 14 months, the size, area fraction and number density of the recrystallized grains increased significantly along with changing the crystallographic textures. The analysis of misorientation angle distribution of boundaries indicated transformation of low angle boundaries to high angle boundaries results in nucleation of recrystallized grains by significant contribution of static recovery. Furthermore, the constant level of mechanical hardness after recrystallization was interpreted by the balance between grain size hardening, oxide particle hardening and strain hardening.