陈佳语,于秋颖,董建新,张麦仓,姚志浩.GH720Li合金γ''相回溶过程对后续析出的遗传影响[J].稀有金属材料与工程,2017,46(10):2929~2935.[CHEN Jia-yu,YU Qiu-yin,DONG Jian-xin,ZHANG Mai-cang,YAO Zhi-hao.Heredity of γ′ phase during the dissolution process to the precipitating process in GH720Li[J].Rare Metal Materials and Engineering,2017,46(10):2929~2935.]
GH720Li合金γ''相回溶过程对后续析出的遗传影响
投稿时间:2015-07-14  修订日期:2015-08-11
中文关键词:  GH720Li合金  γ''相  TTT曲线  CCT曲线
基金项目:国家自然科学基金资助(51371023)
中文摘要:
      研究γ''相回溶过程并模拟Al+Ti含量以及Ti/Al比对γ''相后续冷却析出的影响。γ''相的冷却析出与γ''相回溶及回溶后Al、Ti元素的扩散动力学过程有关。保温时间延长与固溶温度升高使γ''冷却析出相尺寸减小;不同冷速下,γ''析出相尺寸、形状与分布不同。TTT与CCT曲线中,随着Al、Ti含量的增加,不同速率下的γ''析出相温度升高且相对应的析出时间提前。水冷乃至冷却速率达至1000 ℃/min时,无法抑制γ''相冷却析出。Ti/Al比的变化对γ''相的析出基本无影响。
Heredity of γ′ phase during the dissolution process to the precipitating process in GH720Li
英文关键词:GH720Li  γ'' phase  TTT curve  CCT curve
英文摘要:
      The influence of the dissolution process of γ'' phase on the subsequent precipitating process of γ'' phase was investigated and the effect of Al+Ti contents and Ti/Al ratios to γ'' precipitate was also simulated. The precipitation of γ'' phase are influenced by the dissolution of γ'' phase and the diffusion of Al and Ti content. The size of γ'' precipitate decreases with the increase of solution time and temperature. The precipitation of γ'' phase exhibits various sizes, shapes and distributions under the water cooling condition. It can be shown in TTT and CCT curves that the precipitating temperature increases and the precipitating time decreases under various cooling rates with changes in Al+Ti contents. The precipitation of γ'' phase can not inhibited under the water cooling condition and even when the cooling rate is 1000 ℃/min. Meanwhile, no obvious influence is observed on the precipitation process of γ'' phase with the various Ti/Al ratios.
作者单位E-mail
陈佳语 北京科技大学材料科学与工程学院 chenjiayu975@126.com 
于秋颖 北京科技大学材料科学与工程学院  
董建新 北京科技大学材料科学与工程学院  
张麦仓 北京科技大学材料科学与工程学院  
姚志浩 北京科技大学材料科学与工程学院  
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