2篇
您的检索式：作者名="Haowei Pan"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Study on Dendritic Growth in Pressurized Solidification of Mg–Al Alloy Using Phase Field Simulation显示文摘A multi-grain phase field model coupled with thermodynamic calculation was adopted to describe the dendritic growth in pressurized solidification of Mg–Al alloy during squeeze casting,in which the effects of the pressure on the Gibbs free energy and chemical potential of solid and liquid phases,the solute diffusion coefficient,and the solute partition coefficient were considered. The individual effect of solute diffusion coefficient,and the Gibbs free energy on the dendritic growth was studied. With the comparison of the dendritic growth under atmospheric and elevated pressures,the effect of pressure on the microstructure evolution was discussed. The results showed that the grains are refined,the dendritic growth rate tends to increase and the secondary dendrite arms are more developed as the pressure is increased from 0.1 to 100 MPa,which showed a good agreement with the experimental results of direct squeeze casting of Mg–Al alloy. As the pressure increases,the largest dendritic growth rate can be obtained under the pressure between 200 and 250 MPa,while the growth rate decreases with a further increase of pressure. | Haowei Pan Zhiqiang Han Baicheng Liu | 2016 | Journal of Materials Science & Technology2016，32，1： | 9 |
| 2 | Novel Mg-Bi-Mn wrought alloys:The effects of extrusion temperature and Mn addition on their microstructures and mechanical properties显示文摘Designing and developing the Mg alloys with low cost and high performance is of the great significance.Novel Mg-1Bi-xMn(x=0,1and 2 wt.%)extruded alloys,in this work,were fabricated at different extrusion temperatures(220,250 and 300℃).The effects of extrusion temperature and Mn addition on the microstructures and mechanical properties of extruded alloys at room temperature were investigated.The results showed that decreasing the extrusion temperature could refine the average grain size,weaken the basal fiber texture intensity and improve the microstructural homogeneity of extruded alloys.When the Mn element was added to the Mg-1Bi alloy,the average grain size further reduced.Simultaneously,the number fraction of low angle grain boundaries(LAGBs)increased,along with the occurrence of regions without dynamic recrystallization(unDRX).The combined effects of grain refinement and coarse unDRXed structure made the textures of the extruded Mg-1Bi-xMn alloys never obviously change.Besides few large size un-dissolved second phases,fine Mg_(3)Bi_(2) and α-Mn phases were precipitated in the extruded Mg-1Bi-xMn alloys and partial nano-scaleα-Mn particles pined at grain boundaries(GBs)to effectively impede the migration of GBs for grain refinement.Microstructural variations determined the extruded Mg-1Bi-2Mn alloy to exhibit the highest yield strength of~319.2 MPa with the appropriate elongation-to-failure of~13%at the extrusion temperature of 220℃,and they enabled the extruded Mg-1Bi-1Mn alloy to show the highest elongation-to-failure of~26%without the obvious loss of yield strength of~252.1 MPa. | Qinghang Wang Haowei Zhai Lintao Liu Hongbo Xia Bin Jiang Jun Zhao Daolun Chen Fusheng Pan | 2022 | Journal of Magnesium and Alloys2022，10，9： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员