Influence of Cryorolling on the Precipitation of Cu-Ni-Si Alloys: An In Situ X-ray Diffraction Study

被引：11

作者：

Wang, Wei ^{[1
]}

Chen, Zong-Ning ^{[1
]}

Guo, En-Yu ^{[1
]}

Kang, Hui-Jun ^{[1
]}

Liu, Yi ^{[2
]}

Zou, Cun-Lei ^{[1
]}

Li, Ren-Geng ^{[1
]}

Yin, Guo-Mao ^{[1
]}

Wang, Tong-Min ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, Key Lab Solidificat Control & Digital Preparat Te, Dalian 116024, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2018年 / 31卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Copper alloy; Cryogenic; Rolling; Aging precipitation; Synchrotron radiation; X-ray diffraction; MECHANICAL-PROPERTIES; ANNEALING BEHAVIOR; HIGH-STRENGTH; COPPER; MICROSTRUCTURE; EVOLUTION; RECRYSTALLIZATION; NUCLEATION; TEXTURE; MODEL;

D O I：

10.1007/s40195-018-0781-x

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

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.

引用

页码：1089 / 1097

页数：9

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