|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Microstructure, mechanical and biodegradable properties of a Mg–2Zn–1Gd–0.5Zr alloy with different solution treatments显示文摘Solution treatment is a useful way to improve the degradation resistance of Mg alloys.In this work,effects of solution treatment temperature on mechanical and biodegradable properties of an extruded Mg–2Zn–1Gd–0.5Zr alloy were studied.Microstructure analysis,tensile test, three-point bending test, immersion test and electrochemical test were performed.The results showed that increasing solution temperature decreases the mechanical properties of the alloy.However, three-point bending test revealed that the solution-treated alloy at 510 ℃ could maintain 95% of its maximum bending force(Fmax) during the 28-day immersion period.After treatment at 510 ℃ for 5 h, all the second phases were dissolved into the alloy, the galvanic corrosion was inhibited, and the alloy exhibited good corrosion resistance with a corrosion rate of 0.35 mm·year-1 in Hank’s solution. | Jun-Xiu Chen Ming Gao Li-Li Tan Ke Yang | 2019 | Rare Metals2019，38，6： | 9 |
| 2 | High-temperature deformation behavior and processing map of the as-cast Inconel 625 alloy显示文摘A short process of Inconel 625 alloy tube was developed to solve the problems of the traditional extrusion process,and particular attention was paid on the hot deformation behavior of the as-cast Inconel 625 alloy.The hot compression experiments were performed to study the hot deformation behavior of Inconel 625 in the temperature range of 900-1200℃ and strain rate range of0.01-10.00 s^(-1) by Gleeble-3500.The hot compressed microstructure was examined to study the effects of temperature and strain rate on the microstructural characteristic by electron backscatter diffraction(EBSD).The results show that the processing maps were greatly influenced by the temperature rather than the strain rate.It is found that with the strain increasing,the instability zone gradually turned to the low-temperature and low strain rate area,while the range of high-temperature instability area shrank.The optimum condition of the as-cast Inconel 625 alloy was determined as high strain rate region(temperature of1100-1200℃,strain rate of 1.00-10.00 s^(-1))with the dissipation efficiency of above 0.28.As illustrated by microstructural characteristic of EBSD analysis,the perfect dynamic recrystallization occurred and fine grain structure was obtained under this deformation conditions. | Zhi Jia Ze-Xi Gao Jin-Jin Ji De-Xue Liu Ting-Biao Guo Yu-Tian Ding | 2021 | Rare Metals2021，40，8： | 3 |
| 3 | 镁稀土合金焊接工艺及组织性能研究现状与展望显示文摘随着航空航天、交通运输等领域对装备轻量化需求的提高,镁稀土合金因其比强度、比刚度大,抗蠕变能力强,高温力学性能优良等特点展现出广阔的应用前景。通过焊接工艺可以降低镁稀土合金大型复杂结构件的成型难度,有利于推广镁稀土合金在相关关键领域的进一步应用。本文围绕镁稀土合金的特性,介绍了镁稀土合金的性能及应用。着重讨论了稀土元素对镁合金可焊性的影响机制,总结了近年来国内外适用于镁稀土合金的焊接工艺,阐明了焊前、焊后热处理对接头成型、组织性能、焊接缺陷的影响,最后对镁稀土合金焊接工艺的研究方向作出展望。 | 吴国华 张国庆 童鑫 张亮 丁文江 | 2021 | 有色金属科学与工程2021，12，1： | 3 |
| 4 | 生物可降解镁合金研究进展显示文摘可降解镁合金作为生物材料具有良好的应用前景,首先综述了可降解镁合金作为生物材料存在的突出问题;其次,介绍了合金化和表面改性两种方法在提高镁合金降解性能和生物活性等方面的应用;随后,介绍了镁合金作为可降解心血管支架和骨修复材料的研究进展;最后,对可降解镁合金的研究进展进行了总结和展望。 | 陈军修 王晓婉 刘辰 朱翔鹰 苏旭平 徐永东 朱秀荣 | 2021 | 特种铸造及有色合金2021，41，10： | 2 |
| 5 | Microstructure,mechanical properties and fracture behavior of a new WE43 alloy显示文摘The microstructures,mechanical properties and fracture behaviors of a new WE43 alloy(Mg-4 Y-1.6 Nd-2 Sm-0.5 Zr)were investigated.The microstructure of the as-cast alloy includes a Mg matrix,Mg_(41)Sm_(5),Mg_(41)Nd_(5)and Mg_(24)Y_(5)eutectic phases,as well asβ-phase.After an optimal solution treatment,the eutectic phases are almost completely dissolved;only a few spots of blocky Mg-Y compounds remain at grain boundaries.After an aging treatment,a large amount ofβ’-phases are dispersed and precipitated at the grain interior,which provides good comprehensive mechanical properties of the alloy,particularly in the under-aged state.The tensile strength is up to290 MPa,the yield strength reaches 209 MPa,and the elongation is slightly improved.Furthermore,the fracture behaviors of the studied alloy in different states significantly differ.In addition,a comparison of mechanical properties of the new WE43,traditional WE43 and other modified WE43 alloys is presented. | Gui-Long Jia Li-Ping Wang Yi-Cheng Feng Er-Jun Guo Yan-Hong Chen Chang-Liang Wang | 2021 | Rare Metals2021，40，8： | 1 |
| 6 | Microstructure and mechanical properties of magnesium–lithium alloy prepared by friction stir processing显示文摘In this study, the fine-grained Mg–Li alloy was prepared by friction stir processing(FSP). The microstructure and mechanical properties of the frictionstir-processed(FSPed) Mg–Li alloy were investigated. The result showed that FSP resulted in the grain refinement, and the average grain size of the b-Li phase was about 7.5 lm.Besides the a-Mg and b-Li phases, a small amount of Li_(3)Mg_(7), Li_(2)MgAl and AlLi phases were obtained. Compared with the base metal(BM), the weakening of the crystallographic texture occurred in the FSPed material,and the c-axis of the a-phase and the <001> crystallographic orientation of the b-phase were tilted about 45°with respect to the transverse direction(TD). The average microhardness(HV 67.8) of the stir zone was higher than that of the BM(HV 61.5). The yield strength(YS) and the ultimate tensile strength(UTS) of the FSPed material were higher than those of the BM, while the elongation slightly reduced. Grain refinement had more significant effect on strength improvement compared with the texture variation for the FSPed material. The fracture surfaces of the BM and FSPed materials showed dimple characteristics. | Qian-Ying Che Kuai-She Wang Wen Wang Li-Ying Huang Tian-Qi Li Xiao-Peng Xi Pai Peng Ke Qiao | 2021 | Rare Metals2021，40，9： | 1 |
| 7 | 轧制ATZ331合金的显微组织与力学性能显示文摘镁合金由于密度低、比强度高、阻尼减振性好和电磁屏蔽性能良好而受到广泛关注。然而,由于镁合金室温塑性变形能力较差,极大地限制了镁合金的工业应用。本工作采用传统铸造方法获得ATZ331合金,并分别采用单向轧制和交叉轧制方式对ATZ331合金进行塑性变形,采用金相显微镜、扫描电子显微镜(SEM)、X射线衍射仪(XRD)和万能材料试验机等研究了轧制方式对ATZ331镁合金显微组织演变及力学性能的影响规律。结果表明:ATZ331合金经过固溶处理后,基体α-Mg的晶界及晶内存在细小而弥散分布的Mg 2Sn和MgZn颗粒,并通过弥散强化机制提升了ATZ331合金的力学性能。轧制方式对ATZ331合金微观结构及力学性能有较大影响,单向轧制后ATZ331合金的抗拉强度达到222 MPa,但延伸率为18%,低于交叉轧制后合金的延伸率。 | 王力 裴迪 李新林 裴志洋 | 2020 | 材料导报2020，34，S02： | 1 |
| 8 | Microstructural and mechanical properties of ZA10 alloy tubes and their weld seams prepared by Conform continuous extrusion显示文摘In the present work,Zn-10 Al-2 Cu-0.05 Ti(ZA10)alloy tubes with a diameter of 12.5 mm and wall thickness of 1.2 mm were fabricated by one-pass and double-pass Conform continuous extrusion.A stabilizing heat treatment[350℃,30 min(furnace cooling)+120℃,12 h(air cooling)]was also applied to some of the double-pass tubes to improve the quality of their weld seams.The yield strength,ultimate tensile strength,elongation and expansion ratio of the one-pass continuous extrusion tube were 268.4 MPa,294.3 MPa,13.8%and 5.5%,respectively.Double-pass continuous extrusion improved these values to 278.4 MPa,317.2 MPa,15.4%and 11.4%,respectively.Double-pass tubes also had fewer aggregations of Al-αprecipitates along the welding seam,which improved seam quality and caused cracks to appear in the matrix,away from the weld-affected zone,during expansion testing.Heat-treated double-pass tubes exhibited superior yield strength(283.9 MPa)and ultimate tensile strength(328.5 MPa)but lower elongation(10.2%)and expansion ratios(10.3%).Additionally,the heat-treated tubes exhibited markedly lower elongation at room temperature due to the remarkable blockage of dislocation motions by fine-scale lamellar(α+η)eutectoid structures and a lower size effect when stretched. | Gao-Yong Lin Meng-Qiong Xiao Di Feng Xin-Yi Liu Hong-Yang Wang Rui Zhang | 2020 | Rare Metals2020，39，6： | 0 |
| 9 | Stress field interaction during propagation of adjacent tensile twinning nuclei in magnesium显示文摘The shear stress field proximity to the twinning and prismatic/basal interfaces of {1012} tensile twins is shown by molecular dynamics simulations.The stress field interacts and influences the twinning growth mode in the subsequent deformation process,which is simulated by changing the relative positions of the nuclei.An asymmetrical growth mode appears,in which the growth of one twin is predominant over the other when they are oriented at 45° to each other.This growth mode is sensitive to the simulation temperature and strain rate and can be attributed to the interaction of the stress field proximity to the prismatic/basal interfaces and twinning planes. | Zhe Li Ben Xu Qi Sun Qiu-Lin Li Wei Liu | 2019 | Rare Metals2019，38，8： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员