期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

Li对Al-3.5Cu-1.5Mg合金组织与性能的影响 被引量：1

Effect of Li on Microstructures and Properties of Al-3.5Cu-1.5Mg Alloy
下载PDF
导出
摘要 采用光学显微镜(OM)、透射电镜(TEM)、扫描电镜(SEM)、维氏硬度计和力学性能测试等方法研究了Li元素对Al-3.5Cu-1.5Mg合金微观结构及性能的影响。结果表明:在Cu/Mg原子比约为1的Al-3.5Cu-1.5Mg实验合金中,加入1%(质量分数)的Li元素,主要时效析出相由S′(Al2CuMg)转变为S′(Al2CuMg)+δ′(Al3Li),晶界无沉淀析出带(PFZ)窄化;弹性模量提高了8GPa,抗拉强度提高了21MPa,伸长率由20.3%降至15.8%,由韧性断口转变为韧/脆混合型断口。 The effect of Li on microstructures and properties of Al-3.5Cu-1.5Mg alloy was studied by optical microscopy （OM）, transmission electron microscopy （TEM）, scanning electron microscopy （SEM）, Vickers hardness（HV）and electronic tensile test respectively. The results show that the addi- tion of 1% Li （mass fraction） translates the main precipitation phase Sr（Al2CuMg） to S′ （Al2CuMg） ＋ δ′（Al3Li） in the alloy, which Cu/Mg atom ratio is about 1. Precipitate free zones （PFZs） are nar- rowed. Elastic modulus increases by 8GPa. The tensile strength is improved by 21MPa. However, the elongation of the alloy decreases from 20.3% to 15.8%. The form of fracture morphology is changed from ductile fracture to ductile/brittle mixed fracture.
作者 杨金龙 李思宇 叶凌英 邓运来
机构地区 中南大学材料科学与工程学院 中南大学有色金属材料科学与工程教育部重点实验室
出处 《材料工程》 EI CAS CSCD 北大核心 2013年第5期23-27,32,共6页 Journal of Materials Engineering
基金 国家重点基础研究发展计划(973)资助项目(2012CB619500 2010CB731700)
关键词 铝合金 锂 力学性能 显微组织 A1 alloy Li mechanical property microstructure
分类号 TG166.3 [金属学及工艺—热处理]
  • 相关文献

参考文献17

  • 1POLMEAR I J. Light Alloys: Metallurgy of the Light Metals[M]. New York: John Wiley Sons, 1995.
  • 2JAMES C W, EDGAR A S Jr. Progress in structural materialsfor aerospace systems[J3. Acta Materialia , 2003 ’51 ( 19) : 5775一5799.
  • 3SHA G, MARCEAU R K W, GAO X ,et al. Nanostructure ofaluminium alloy 2024: segregation, clustering and precipitationprocesses[J]. Acta Materialia,2011,59(4) : 1659- 1670.
  • 4WANG S C,STARINK M J, GAO N. Precipitation hardeningin Al-Cu-Mg alloys revisited[J]. Script Materalia, 2006,54 ( 2):287-291.
  • 5STARINK M J, GAO N, KAMP N,et al. Relations between mi-crostructure,precipitation age-formability and damage toleranceof Al-Cu-Mg-Li (Mn,Zr,Sc) alloys for age forming[J]. MaterialsScience and Engineering A,2006,418( 1) :241 — 249.
  • 6BANERJEE S, ROB1 P S , SRINIVASAN A , et al. Effect oftrace additions of Sn on microstructure and mechanical propertiesof Al-Cu-Mg alloys [J]. Materials and Design, 2010,31(8) :4007-4015.
  • 7BAKAVORS D,PRANGNELL P B,BES B, et al. The effect ofsilver on microstructural evolution in two 2xxx series A卜alloyswith a high Cu : Mg ratio during ageing to a T8 temper[J]. Mate-rials Science and Engineering A,2008,491( 1) :214 —223.
  • 8LAVERNIA E J,GRANT N |. Review aluminium-lithium alloys[J]. Journal of Materials Science, 1987,22(5) : 1521—1529.
  • 9HUANG B P, ZHENG Z Q. Precipitation kinetics of an Al-4. 01Cu-l. llLi-0. 39Mg-0. 19Zr-0. UTi alloy[J]. Scripta Materia-lia, 1998,38(4) : 611-616.
  • 10MA Y, ZHOU X,THOMPSON G E,et al. Distribution of in-termetallics in an AA 2099-T8 aluminium alloy extrusion [J].Materials Chemistry and Physics,2011,126(1) :46 — 53.

二级参考文献18

  • 1王祝堂,田荣璋.铝合金及其加工手册[M].长沙:中南工业大学出版社,1999.
  • 2TAKAFUMI A, SHIROU K, TAKAHIRO N, et al. Age form- ing technology for aircraft wing skin[J]. Materials Forum, 2004, 28: 202-207.
  • 3HOLMAN M C. Autoclave age forming large aluminium aircraft panels[J]. Journal of Mechanical Working Technology, 1989, 20 (9): 477-488.
  • 4HO K C, LIN J, DEAN T A. Modelling of springback in creep forming thick aluminum sheets[J].International Journal of Plas- ticity, 2004, 20(4 5): 733-751.
  • 5楼瑞祥.大飞机用铝合金的现状与发展趋势[A].大型飞机关键技术高层论坛暨中国航空学会2007年年会论文集[c].深圳:中国航空学会材料工程分会,2007.1-8.
  • 6EBERL F, GARDINER S, CAMPANILE G, et al. Ageformable panels for commercial aircraft[J]. Proceeding of the Institution of Mechanical Engineers, Part G: Aerospace Engineering, 2008, 222(6) :873-886.
  • 7LIU Y B, LIU Z Y, LI Y T, et al. Enhanced fatigue crack propa- gation resistance of an A1-Cu-Mg alloy by artificial aging[J]. Ma- terials Science and Engineering A, 2008, 492(1-2): 333-336.
  • 8KAMP N, GAO N, STARINK M J, et al. In{luence of grain structure slip planarity on fatigue crack growth in low alloying ar- tificially aged 2xxx aluminium alloys[J].International Journal of Fatigue, 2007, 29(5): 869-878.
  • 9PAREL T S, WANG S C, STARINK M J. Hardening of an A1- Cu-Mg alloy containing types I and II S phase preeipitates[J]. Materials and Design,2010, 31(1): s2-s5.
  • 10WANG S C, STARINK M J. Two types of S phase precipitates in A1-Cu-Mg alloys[J]. Acta Materialia, 2007, 55 (3): 933- 941.

共引文献10

同被引文献13

  • 1李东南,汪先明.铸型冷却速度对半固态镁合金浆料凝固组织的影响[J].中国铸造装备与技术,2005,40(4):34-36. 被引量：5
  • 2Cheng W L, Kim H S,You B S,et al.Strenglh and ductility of novel Mg-SSn-IAI-IZn alloys extruded at different speeds[J].Materials Letters,2011(65):1525 - 1527.
  • 3Mackenzie L W F,Pekguleryuz M.The infhlences of alloying additions and processing imramcters on the fulling microslructures and textures of magnesiam alloys[J].Materials Science and Engineering A ,2008(480): 189 - 197.
  • 4Son H T,Kim Y H,Kim D W,et al.Effects of IA addition on the microstruclure and mechanical properties of Mg- 3Zn-lSn-O.4Mn based alloys[J].Jnurnal of Alloys and Compounds,2013(564):30- 137.
  • 5Kawamura Y,Hayashi K,lnoue A,et al.Rapidly solidifid powder metallurgy Mg97Zn,Y2 alloys with excellent tensile yield strength above 600 MPa[J].Materials Transaction,2001,42(7):1172 - 1176.
  • 6Zhang J H,Zhang L,Leng Z,et al. Experimental study on slrengthening of Mg-l,i alloy by introducing long-perind stacking ordered structure[J].Scripta Malerialia,2013(68):675 - 678.
  • 7Zhang J S,Chen C J,Que Z P,et al.18R and 14H long-period stacking ordered structures in the Mggs96Zn2Y4Sr0.04 alloy and the modification effect of Sr on X-phase[J].Materials Science and Engineering A,2012(552):81 - 88.
  • 8Zhao H D,Qin G W,Ren Y P,et al.The maximum solubility of Y in ct-Mg and composition ranges of Mg24Y5-x and Mg,Y~intermetallic phases in Mg-Y binmy system[J].Journal of Alloys and Compounds,2011 (509):627 - 631.
  • 9Grobner J,Kozlov A,Fang X Y,et aI.Phase equilibria and transformations in ternary Mg-rich Mg-Y-Zn alloyslJ].Acta Materialia,2012(60):5948 - 5962.
  • 10Bi G L,Fang D Q,Zhao L,et al. Double-peak ageing behavior of Mg-2Dy-0.5Zn allny[J].Journal of Alloys and Compounds,2011 (509):8268 - 8275.

引证文献1

二级引证文献3

材料工程
2013年 第5期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部