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    题名 作者 年代 出处 被引量
1Mg-10Y-1.5Sm合金的组织和力学性能显示文摘采用合金熔炼、组织分析和拉伸试验,研究了Mg-10Y-1.5Sm合金经过固溶时效后的组织和力学性能。结果表明,合金的组织由α-Mg基体和Mg24Y5相组成,细小的Mg24Y5颗粒相均匀弥散地分布在α-Mg基体上;Sm加入后没有形成新相,而是通过固溶作用,进一步强化了α-Mg基体和Mg24Y5相;合金在200~300℃之间的抗拉强度均大于200 MPa,伸长率均为3%左右,与室温时相比没有发生显著变化;合金的力学性能优于Mg-10Y合金,最高使用温度可达350℃。张清 李全安 井晓天 张兴渊 2011材料热处理学报2011,32,1:31
2稀土Sm在耐热镁合金中的应用显示文摘概述了镁合金的耐热性能及合金化设计依据,介绍了稀土元素Sm在耐热镁合金中的应用,探讨了Sm对镁合金耐热性能的影响,展望了耐热镁合金的发展方向,旨在为耐热镁合金的开发提供思路和依据。张清 李全安 井晓天 张兴渊 2010铸造2010,59,3:27
3Review on long-period stacking-ordered structures in Mg-Zn-RE alloys显示文摘The recent development of high-strength magnesium alloys is focused on the role of the strengthening phases with a novel long-period stacking-ordered (LPSO) structure. This review detailed the main factors influencing the formation of LPSO phases, including alloying ele-ments, preparation methods, and heat treatments. Furthermore, process control in structure types, formation and transformation behavior, strengthening and toughening mechanisms of the LPSO phase were discussed. Finally, the current problems and development trends of high-strength Mg-Zn-RE alloys were also put forward.Lu, Fumin Ma, Aibin Jiang, Jinghua Yang, Donghui Zhou, Qi 2012Rare Metals2012,31,3:12
4Sm对AZ61合金力学性能的影响显示文摘采用XRD、OM和SEM手段研究了Sm(0~2.0%,质量分数,下同)对AZ61合金显微组织和力学性能的影响。结果表明,Sm优先与A1形成高熔点Al2Sm弥散相,细化合金显微组织,提高时效态合金室温抗拉强度和屈服强度。在研究范围内,加入1.5%Sm的合金力学性能最优。Sm可以通过细晶强化、Ramakrishnan强化和Gypen固溶强化机制对AZ61合金强度产生影响。李克杰 李全安 2012稀土2012,33,1:12
5Sm在耐热镁合金中的作用及研究进展显示文摘介绍了稀土元素Sm在耐热镁合金中的作用,重点阐述了Sm改善镁合金力学性能的强化机理,综述了不同系列含Sm耐热镁合金的研究进展,对含Sm耐热镁合金的发展方向进行了展望,认为在控制生产成本的前提下,Sm合金化是耐热镁合金研究的一个重要发展方向,期望能为稀土耐热镁合金的研制和开发提供思路和依据。陈君 李全安 张清 付三玲 陈晓亚 陈雷雷 2014材料导报2014,28,7:11
6稀土钐在镁合金中的应用研究显示文摘概述了稀土元素钐的特性,分析了钐对镁合金的强化机制,列举了钐在Mg-Al、Mg-RE二元及MgRE多元合金系的应用研究现状。同时,对镁钐合金的目前存在的问题和未来研究方向做了总结和预测。张奇 孙良成 鲁飞 胡文鑫 刘树峰 李慧 2015稀土2015,36,2:11
7稀土元素Gd和Sm对AZ81镁合金组织及力学性能的影响显示文摘利用气体保护下感应熔炼方法制备了AZ81+(Gd+Sm)合金,采用光学金相(OM)、扫描电镜(SEM)、X射线衍射分析(XRD)、能谱分析(EDX)和拉伸性能测试等手段,对合金进行了显微组织、力学性能以及断口形貌分析。研究表明:Gd和Sm的添加使得合金晶粒得到细化,在稀土总含量为2%时细化效果最为明显,基体中形成了稀土-铝化合物Al2Sm和Al2Gd10随着Sm和Gd含量的增加,AZ81合金的室温和高温下的抗拉强度先升高后降低,稀土添加量在2%-3%时取得最好的强化效果,过量稀土恶化了组织,降低了性能。李梅菊 丁雨田 2015铸造2015,64,2:10
8Mg-5Y-3Sm-0.8Ca-(0.1~0.8)Sb合金的显微组织和抗拉强度显示文摘采用组织分析和拉伸试验,研究了Mg-5Y-3Sm-O.8Ca-(0.1~0.8)sb(%,质量分数)合金的显微组织和抗拉强度。结果表明,铸态合金的显微组织由d·Mg基体和Mg24Y5,Mg4lsm5,Mg2ca,M勖sb2相组成。随着sb含量的增加,时效态合金的室温(20℃)和高温(200,250,300,350℃)抗拉强度均先升高后降低,且在sb含量为0.5%时取得最大值。随着温度的升高,Mg-SY.3Sm-O.8Ca-O.5Sb合金的抗拉强度缓慢降低,其抗拉强度稳定性可归因于强化相Mg24Y5显微硬度的稳定性。张清 李全安 陈君 张兴渊 2015中国稀土学报2015,33,6:9
9Effects of Ho on the microstructure and mechanical properties of Mg-Zn-Ho-Zr magnesium alloys显示文摘The microstructure and mechanical properties of Mg-Zn-Ho-Zr alloys have been investigated in detail.The grain size of the as-cast Mg-Zn-Ho-Zr alloy was greatly decreased by the addition of Ho,and the grain growth during solution treatment was suppressed by Mg-Zn-Ho phases formed at grain boundaries.These thermally stable Mg-Zn-Ho phases could not completely dissolve into the matrix during solution treatment,and the strengthening effect of solution-plus-ageing treatment weakened.The addition of Ho can greatly enhance the high-temperature elongation of the Mg-Zn-Ho-Zr alloy,but the increase of high-temperature tensile strength was just a little.LI Daquan WANG Qudong DING Wenjiang 2011Rare Metals2011,30,2:8
10Effects of Sm addition on microstructure and mechanical properties of a Mg-10Y alloy显示文摘To further increase the mechanical properties, 0.5wt.% Sm was introduced to a Mg-10Y alloy in this study. The effects of Sm addition on the microstructures and mechanical properties of the Mg-10Y alloy, especially the aged Mg-10Y alloy, were investigated. The microstructure observation and tensile tests were performed by using an optical microscopy, a scanning electron microscopy and a universal material testing machine, respectively. The phase analysis was performed using X-ray diffractometer. The results show that the 0.5wt.% Sm addition can not only promote the formation of fine and dispersed Mg24Y5 phases, but also improve their morphology and distribution; it also increases the thermal stability of Mg24Y5 phases. Sm addition is seen to increase the ultimate tensile strength of Mg-10Y alloy at elevated temperatures(200, 250, 300 and 350 ℃), while decrease the elongation. But the elongation is still up to 7.5% even at 350 ℃. In the range of 250 ℃ to 300℃, the ultimate tensile strength of the alloy reaches its maximum(with a range average of 235 MPa) and is not sensitive to the temperature change, which is very useful to the application of heat-resistant magnesium alloys. Even at 350 ℃, the ultimate tensile strength of Mg-10Y-0.5Sm is still up to 155 MPa. Considering both of the ultimate tensile strength and elongation, the maximum application temperature of the Mg-10Y-0.5Sm alloy can be up to 300 ℃. The strengthening mechanisms of Mg-10Y-0.5Sm alloy are mainly attributed to dispersion strengthening of Mg24Y5 phase particles with a certain solubility of Sm and grain refinement strengthening of α-Mg matrix.Li Quanan Zhang Qing Wang Yaogui Zhou Wei 2014China Foundry2014,11,1:7
11Sm对Mg-10Y合金组织的细化作用显示文摘Mg24Y5相的细化是进一步提高Mg-10Y合金力学性能的关键。研究了稀土元素Sm对Mg-10Y合金中的Mg24Y5相及其基体组织的细化作用,结果表明:Sm的加入,改善了Mg24Y5相的形貌,促进了细小弥散分布的Mg24Y5颗粒相的形成;同时,Sm的加入,通过固溶作用,进一步细化了基体组织;显微组织的改善导致了合金高温下力学性能的提高。张清 李全安 井晓天 张兴渊 2011材料工程2011,39,3:7
12Mg-Al-Sm系耐热镁合金的显微组织和力学性能(英文)显示文摘分析铸态和压铸态Mg-6.02Al-1.03Sm、Mg-6.05Al-0.98Sm-0.56Bi和Mg-5.95Al-1.01Sm-0.57Zn合金的显微组织和相组成,测试其拉伸力学性能与流动性能。结果表明,Mg-6.02Al-1.03Sm合金铸态组织由δ-Mg基体、半连续的δ-Mg17Al12相和高热稳定性的小块状Al2Sm相组成。添加Bi后生成杆状Mg3Bi2相,而添加的Zn固溶于δ-Mg基体和δ-Mg17Al12相中。铸态合金呈现优异的拉伸力学性能,室温时其抗拉强度(δb)和伸长率(δ)分别达到205~235 MPa和8.5%~16.0%,而423 K时分别超过160 MPa和14.0%。压铸态组织明显细化,第二相发生破碎,且弥散分布。压铸态合金呈现更高的拉伸力学性能和优异的流动性能,室温δb和δ分别达到240~285 MPa和8.5%~16.5%,流动长度可达1870~2420 mm。压铸态室温拉伸断口呈现明显的断裂特征。黄正华 戚文军 徐静 蔡畅 2015Transactions of Nonferrous Metals Society of China2015,25,1:7
13稀土元素Sm对AM60镁合金显微组织和耐腐蚀性能的影响显示文摘采用静态失重法、扫描电子镜及能谱分析、电化学测试法等方法研究了稀土元素Sm(0~0.9%)对AM60镁合金的铸态组织和耐腐蚀性的影响。结果表明:微量稀土元素Sm可细化AM60镁合金中β-Mg17Al12相,合金中的β-Mg17Al12相由粗大、连续树枝状分布逐渐转变为细小、弥散的颗粒状均匀分布。同时,合金中生成了大量弥散分布的富Sm的稀土相。这些富Sm的稀土相使合金的耐腐蚀性得到显著提高,当稀土Sm含量为0.6%时,合金腐蚀速率为0.6mg·cm-2·d-1,仅为基体合金的37%。随AM60镁合金中稀土元素Sm含量的增加,合金腐蚀电位逐渐升高,腐蚀电流减小。江民华 2015热加工工艺2015,44,4:7
14单一稀土元素在铸造铝合金中应用现状显示文摘论述了稀土元素的特性,系统综述了国内外单一稀土元素在铸造铝合金中应用研究现状,讨论不同稀土元素加入时对铸造铝合金组织以及性能的影响;通过对多种稀土元素在不同的铸造铝合金中的作用进行分析,系统阐述稀土元素在铸造铝合金中应用现状,以帮助铸造工作者深入了解稀土元素在铸造铝合金中的作用并成功地将各类稀土元素用于铸造铝合金中。辛明德 李忠允 2015机械工程师2015,,11:4
15Microstructure and mechanical properties of Mg-10Y-2.5Sm alloy显示文摘The microstructure and mechanical properties of aged Mg-10Y-2.5Sm alloy were investigated.The results showed that the microstructure of the alloy consisted of α-Mg matrix and Mg24Y5 phase,and fine Mg24Y5 particles distributed in α-Mg matrix uniformly and dispersedly.Sm enhanced α-Mg matrix and Mg24Y5 phase by solid solution effect.At 200-300 oC,the ultimate tensile strengths were more than 200 MPa and the elongations were about 3%.Compared with those at room temperature,the mechanical properties had no obvious changes.张清 李全安 井晓天 张兴渊 2010Journal of Rare Earths2010,28,S1:4
16Improvement of yttrium on the hot tearing susceptibility of 6TiB_2/Al-5Cu composite显示文摘To improve the severe hot tearing susceptibility of TiB_2 reinforced Al-5Cu matrix composites,the present research investigated the influence of Y on the hot tearing susceptibility of 6TiB_2/Al-5Cu composite.For the composite added with Y,the solidification temperature range was shortened,which was caused by the novel τ_1-Al_8Cu_4Y phase.The grain size of 6TiB_2/Al-5Cu composite was 39.8 μm.The addition of Y promoted the grain refinement,and the grain sizes were 36.33,33.42 and 26.77 μm for 6TiB_2/Al-5Cu with 0.2 wt.%,0.5 wt.%and 1 wt.%Y,respectively.The decrease of solidification temperature range and grain size was beneficial to the hot tearing susceptibility improvement.Furthermore,the hot tearing initiation force increased from 44 to 288 N,when 1 wt.%Y was added in 6TiB_2/Al-5Cu.For the above significant influence,the hot tearing susceptibility values were reduced by 12.2 wt.%,57.7wt.%and 66.8 wt.%for 6TiB_2/Al-5Cu with 0.2 wt.%,0.5 wt.%and 1 wt.%Y,accordingly.张晓波 孙靖 汪明亮 张亦杰 马乃恒 王浩伟 2015Journal of Rare Earths2015,33,12:4
17Electrical conductivity optimization of the Na3AlF6–Al2O3–Sm2O3 molten salts system for Al–Sm intermediate binary alloy production显示文摘Metal Sm has been widely used in making Al–Sm magnet alloy materials. Conventional distillation technology to produce Sm has the disadvantages of low productivity, high costs, and pollution generation. The objective of this study was to develop a molten salt electrolyte system to produce Al–Sm alloy directly, with focus on the electrical conductivity and optimal operating conditions to minimize the energy consumption. The continuously varying cell constant(CVCC) technique was used to measure the conductivity for the Na_3 AlF_6–AlF_3–LiF–MgF_2–Al_2O_3–Sm_2O_3 electrolysis medium in the temperature range from 905 to 1055°C. The temperature(t) and the addition of Al_2O_3(W(Al_2O_3)), Sm_2O_3(W(Sm_2O_3)), and a combination of Al_2O_3 and Sm_2O_3 into the basic fluoride system were examined with respect to their effects on the conductivity(κ) and activation energy. The experimental results showed that the molten electrolyte conductivity increases with increasing temperature(t) and decreases with the addition of Al_2O_3 or Sm_2O_3 or both. We concluded that the optimal operation conditions for Al–Sm intermediate alloy production in the Na_3 AlF_6–AlF_3–LiF–MgF_2–Al_2O_3–Sm_2O_3 system are W(Al_2O_3) + W(Sm_2O_3) = 3wt%, W(Al_2O_3):W(Sm_2O_3) = 7:3, and a temperature of 965 to 995°C, which results in satisfactory conductivity, low fluoride evaporation losses, and low energy consumption.Chun-fa Liao Yun-fen Jiao Xu Wang Bo-qing Cai Qiang-chao Sun Hao Tang 2017International Journal of Minerals,Metallurgy and Materials2017,24,9:4
18Mg-Al-Zn-Sm耐热镁合金的组织与力学性能显示文摘利用光学显微镜、扫描电镜和X射线衍射仪分析了铸态和固溶态AZ61和AZ61-2Sm合金组织形貌和相组成,测试了其硬度和拉伸力学性能。结果表明,向AZ61合金中添加2%Sm后,铸态组织有所细化,β-Mg17Al12相数量减少和尺寸变小,同时生成小块状的高热稳定性相Al2Sm。经固溶处理后,β-Mg17Al12相完全固溶于α-Mg基体中,只存在Al2Sm相。铸态和固溶态室温拉伸力学性能与AZ61合金相当,而铸态高温拉伸力学性能却显著提高,经固溶后得到进一步提高,与铸态室温相当。黄正华 刘杰 戚文军 郑开宏 张新明 刘敏 余志明 2012热加工工艺2012,41,12:4
19Mg-5Y-3Sm合金的组织与性能稳定性研究显示文摘采用OM、XRD、SEM、EDS和拉伸试验,研究了时效态Mg-5Y-3Sm合金的显微组织和拉伸性能的稳定性。结果表明,合金中有Mg_(24)Y_5相生成。合金具有良好的室温及高温抗拉强度,从室温到300℃,抗拉强度缓慢降低,其稳定性优于WE54商用耐热镁合金。合金的抗拉强度与强化相Mg_(24)Y_5的硬度呈线性关系,拉伸性能的稳定性主要归因于强化相Mg_(24)Y_5硬度的稳定性。张清 王莹 李萍 2018铸造技术2018,39,7:4
20Sm对AZ61合金显微组织的影响显示文摘采用XRD、OM、SEM和TEM等微观分析方法研究了含0~2.0wt%Sm的AZ61合金显微组织。研究发现,稀土Sm与合金内A1原子结合形成高熔点Al2Sm弥散粒子,Al2Sm相可以作为AZ61合金基体α-Mg的形核核心,从而细化合金组织。李克杰 2012热加工工艺2012,41,11:3
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