工程科学学报2017，Vol.39Issue(6)：867-874,8.DOI:10.13374/j.issn2095-9389.2017.06.008
第二相粒子与织构对高强Cu--Ni--Si系合金薄板各向异性的影响
Effects of precipitates and texture on the anisotropy of high-strength Cu--Ni--Si alloy sheets
摘要
Abstract
The effects of texture and precipitates on the plane anisotropy of Cu-Ni-Si alloy under different solid-solution tempera-ture conditions were investigated by X-ray diffraction, electron backscattered diffraction, and transmission electron microscopy. The results show that strength and elongation first increase and then decrease with increasing solid-solution temperature, exhibiting appar-ently anisotropy. After 800℃ solid solution, the Cu'and S' are mainly texture and the alloy has weak anisotropic properties, which correlates with the coexistence of Brass, Goss, and {011}〈511〉 orientation owing to deformed grains. Complete recrystallization can be obtained at high temperature solution (≥850℃) , the Cu' and S' texture intensity increases, whereas the Brass texture weakens and disappears and the anisotropy increases. δ- Ni2 Si precipitation is observed after 850℃ solution and subsequent aging, and the crystal orientation between the matrix and precipitates is [001] Cu//[110]δ and (010) Cu//(001)δ. The fraction of nanosize precipi-tates decreases significantly with increasing temperature and this improves the anisotropy.关键词
铜-镍-硅系合金/固溶/织构/第二相/各向异性Key words
copper-nickel-silicon/solid solution/texture/precipitates/anisotropy分类
矿业与冶金引用本文复制引用
汪志刚,冯兴宇,杨泰胜,张迎晖,肖翔鹏..第二相粒子与织构对高强Cu--Ni--Si系合金薄板各向异性的影响[J].工程科学学报,2017,39(6):867-874,8.基金项目
国家自然科学基金资助项目(51264012) （51264012）
59批中国博士后科学基金面上资助项目(2016M592101) （2016M592101）
江西省科技支撑计划资助项目(20161BBE50065) （20161BBE50065）
