博士生黄朋朋关于压制烧结铝合金及复合材料的工作在 Powder Metallurgy (粉末冶金)杂志上发表!
- 发布时间:2025-03-06
- 文章标题:博士生黄朋朋关于压制烧结铝合金及复合材料的工作在 Powder Metallurgy (粉末冶金)杂志上发表!
- 内容:
祝贺博士生黄朋朋关于压制烧结铝合金及复合材料的工作在 Powder Metallurgy (粉末冶金)杂志上发表,这种工作在学术界已经很少见了, 大家都不想干,难度大,分数又低…..
感谢 深圳市卡德姆科技有限公司、东莞歌鸿材料科技有限公司、西安福莱电工材料有限公司、电磁能国家实验室等单位和Li Kemin教授的帮助。
Enhanced mechanical properties and wear
resistance of Al
–
Cu
–
Mg alloy fabricated by
press-and-sinter processing
Pengpeng Huang
, Letian Wang
, Zhongyue Yang
, Yake Wu
,
Zhenzhuo Ling
, Qianhang Cui
, Hualei Wang
and Feng Jiang
Abstract
Two of the main challenges facing the current application of press-and-sinter aluminium alloys are poor densifification and
insuffificient properties such as mechanical properties and wear resistance. In this work, the press-and-sinter Al–4.4Cu–
1.6Mg alloy (wt.%) and 5SiC/Al–4.4Cu–1.6Mg (wt.%) composite are successfully developed through optimizing the sinter
ing temperature and heat treatment. The results show that the relative density, hardness and mechanical properties of as
sintered alloy and composite increase with the increase of the sintering temperature. Under the same sintering tempera
ture, the relative density of the composite is comparable to that of the single alloy. When the sintering temperature is 596
°C, both the alloy and composite achieve full densifification with a relative density of 99.7% and 99.3%, respectively.
Consequently, their hardness and mechanical properties also achieve the optimal value. For the peak-aged state, the
alloy exhibits a favourable combination of yield strength, ultimate tensile strength of 325.3 MPa and 394.0 MPa and frac
ture elongation of 3.8%. The addition of the SiC particles further enhances the yield strength and ultimate tensile strength
of the peak-aged alloy to 375.0 MPa and 441.0 MPa, respectively. The wear rate of the peak-aged composite is comparable
to that of the 45 steel and is less than half that of the peak-aged alloy due to the enhanced hardness and the stable wear
protection provided by the SiC particles.