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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：研究生院常务副院长
其他任职：辽宁省凝固控制与数字化制备技术重点实验室主任
性别：男
毕业院校：大连理工大学
学位：博士
所在单位：材料科学与工程学院
学科：材料加工工程
办公地点：研究生院；材料科学与工程学院
联系方式：tmwang@dlut.edu.cn
电子邮箱：tmwang@dlut.edu.cn
Influence of Cryorolling on the Precipitation of Cu-Ni-Si Alloys: An In Situ X-ray Diffraction Study
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论文类型：期刊论文
发表时间：2018-10-01
发表刊物：ACTA METALLURGICA SINICA-ENGLISH LETTERS
收录刊物：SCIE
卷号：31
期号：10
页面范围：1089-1097
ISSN号：1006-7191
关键字：Copper alloy; Cryogenic; Rolling; Aging precipitation; Synchrotron radiation; X-ray diffraction
摘要：The effect of cryorolling on the precipitation process of deformed Cu-Ni-Si alloys was investigated through in situ synchrotron X-ray diffraction technique. The results demonstrate that the precipitation process is significantly accelerated by cryorolling. Cryorolling produces higher dislocation density, which provides more heterogeneous nucleation sites for Ni2Si precipitates, hence promotes precipitation. In the early stage of aging, the enhanced nucleation of precipitates accelerates the depletion of supersaturation, and finer precipitates are obtained. In addition, recrystallization is promoted as a result of high stored energy in the cryorolled Cu-Ni-Si alloys, which facilitates the formation of discontinuous precipitation in the late stage of aging.