中南大学学报（自然科学版）2016，Vol.47Issue(11)：3648-3657,10.DOI:10.11817/j.issn.1672-7207.2016.11.005
微量锆、镱和铬在铝合金中的存在形式及其作用机制
Form and function mechanism of trace amount element zirconium, ytterbium and chromium in aluminum alloys
摘要
Abstract
The existing forms and function mechanism of trace amount element zirconium, ytterbium and chromium in aluminum alloys were studied by hardness measurement, optical microscopy and transmission electron microscopy. High temperature precipitation-hardening effect of Al-Zr-Cr, Al-Zr-Yb, Al-Cr-Yb, Al-Zr-Cr-Yb alloys and inhibit-recrystallization ability of different kinds of dispersoids in these alloys were compared. The results show that the high temperature precipitation-hardening effect and inhibit-recrystallization ability of Al-Cr-Yb, Al-Zr-Cr, Al-Zr-Yb and Al-Zr-Yb-Cr increase. The aluminum alloy with simultaneous addition of trace amount element Zr, Yb and Cr has the optimum high temperature precipitation-hardening effect and inhibit-recrystallization ability, which is related to the excellent high temperature stability, small particle size and higher degree of dispersion of coherent Cr-containing Al3(Zr,Yb) dispersoids.关键词
Al-Zr-Yb-Cr合金/析出/再结晶/硬化Key words
Al-Zr-Yb-Cr alloys/precipitation/recrystallization/hardening分类
矿业与冶金引用本文复制引用
方华婵,张茁,巢宏,陈康华..微量锆、镱和铬在铝合金中的存在形式及其作用机制[J].中南大学学报（自然科学版）,2016,47(11):3648-3657,10.基金项目
湖南省自然科学基金资助项目(2015JJ3167)；国家自然科学青年基金资助项目(51501228)；国家重点基础研究发展计划(973计划)项目(2010CB731701)(Project(2015JJ3167) supported by the Natural Science Foundation of Hunan Province （2015JJ3167）
Project(51501228) supported by the National Natural Science Foundation for Disinguished Young Scholars of China （51501228）
Project(2010CB731701) supported by the National Basic Research Development Program (973 Program) of China) （2010CB731701）
