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| 1 | Effects of substrate temperature and deposition time on the morphology and corrosion resistance of FeCoCrNiMo0.3 high-entropy alloy coating fabricated by magnetron sputtering显示文摘The effects of substrate temperature and deposition time on the morphology and corrosion resistance of FeCoCrNiMo0.3 coating fabricated by magnetron sputtering were investigated by scanning electron microscopy and electrochemical tests.The FeCoCrNiMo0.3 coating was mainly composed of the face-centered cubic phase.High substrate temperature promoted the densification of the coating,and the pitting resistance and protective ability of the coating in 3.5wt%NaCl solution was thus improved.When the deposition time was prolonged at 500℃,the thickness of the coating remarkably increased.Meanwhile,the pitting resistance improved as the deposition time increased from 1 to 3 h;however,further improvement could not be obtained for the coating sputtered for 5 h.Overall,the pitting resistance of the FeCoCrNiMo0.3 coating sputtered at 500℃for 3 h exceeds those of most of the reported high-entropy alloy coatings. | Chun-duo Dai Yu Fu Jia-xiang Guo Cui-wei Du | 2020 | International Journal of Minerals,Metallurgy and Materials2020，27，10： | 7 |
| 2 | Al_xCrCuNiTi高熵合金的微观组织与硬度显示文摘采用非自耗真空电弧炉熔炼制备了AlxCrCuNiTi(x=0.2、0.4、0.6、1.0)高熵合金,利用X射线衍射仪(XRD)、扫描电镜(SEM)、能谱分析(EDS)和显微硬度计对合金的微观组织和硬度进行了分析。结果表明,AlxCrCuNiTi合金主要由BCC1、BCC2和FCC固溶体相组成,随Al含量增加,合金中FCC相的相对含量减少而BCC相的相对含量增加,表明Al元素有利于BCC相的形成。合金微观组织主要呈树枝晶和枝晶间结构,随着Al含量增加,AlxCrCuNiTi合金中的枝晶区域缩小而枝晶间区域扩大,Al、Cr、Ti偏析于枝晶区而Cu、Ni偏析于枝晶间区域。随Al含量的提高,AlxCrCuNiTi合金的硬度(HV)从376增加至513。 | 郭富强 | 2019 | 特种铸造及有色合金2019，39，12： | 2 |
| 3 | A new method of preparing high-performance high-entropy alloys through high-gravity combustion synthesis显示文摘A new method of high-gravity combustion synthesis(HGCS)followed by post-treatment(PT)is reported for preparing high-performance high-entropy alloys(HEAs),Cr0.9FeNi2.5V0.2Al0.5 alloy,whereby cheap thermite powder is used as the raw material.In this process,the HEA melt and the ceramic melt are rapidly formed by a strong exothermic combustion synthesis reaction and completely separated under a high-gravity field.Then,the master alloy is obtained after cooling.Subsequently,the master alloy is sequentially subjected to conventional vacuum arc melting(VAM),homogenization treatment,cold rolling,and annealing treatment to realize a tensile strength,yield strength,and elongation of 1250 MPa,1075 MPa,and 2.9%,respectively.The present method is increasingly attractive due to its low cost of raw materials and the intermediate product obtained without high-temperature heating.Based on the calculation of phase separation kinetics in the high-temperature melt,it is expected that the final alloys with high performance can be prepared directly across master alloys with higher high-gravity coefficients. | Fu-kai Zheng Guan-nan Zhang Xiu-juan Chen Xiao Yang Zeng-chao Yang Yong Li Jiang-tao Li | 2020 | International Journal of Minerals,Metallurgy and Materials2020，27，10： | 2 |
| 4 | Effect of TiO_(2)nano-ceramic particles on microstructure and mechanical properties of Al_(0.4)CoCrFe_(2)Ni_(2)high-entropy alloy显示文摘Al_(0.4)CoCrFe_(2)Ni_(2)high-entropy alloys with different additions of TiO_(2) nanoceramic particles(0,1.25vol.%,2.5vol.%,3.75vol.%and 5vol.%,respectively)were prepared by using the vacuum arc melting method.The effects of TiO_(2) addition on the crystal structure,microstructures and mechanical properties of the alloy were investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),and tensile testing.The microstructure analysis shows that the TiO_(2)nano-ceramic particles added in the alloy are decomposed,and a small amount of Al_(2)O_(3)and a great number of intermetallic compounds(γ'phases)with simple cube structure are formed.Theγ'phases are enriched at inter-dendrite,which increases the resistance of dislocation movement during the deformation of the alloy,thus balancing the problem of high plasticity and low strength of the alloy.When the addition of TiO_(2)is 2.5vol.%,the strength of the high-entropy alloy reaches the maximum of 489 MPa,which is 11.1%higher than the matrix alloy composed of single FCC phase. | Hao Qi Guang-long Li Wei Zhang Qing-yao Lü Rong-de Li Si-chen Xie Yu Shi Bo Yu Rui-run Chen Ying-dong Qu | 2022 | China Foundry2022，19，6： | 0 |
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