热机械加工对2099铝锂合金挤压材组织与抗腐蚀性能的影响

稀有金属材料与工程, 2013, 42(12): 2619-2624.

热机械加工对2099铝锂合金挤压材组织与抗腐蚀性能的影响

张振强 ^1, , 许晓静 ^2, , 宋涛 ^3, , 张允康 ^4, , 罗勇 ^5, , 吴瑶 ^6, , 邓平安 ^7,

1.江苏大学,江苏镇江212013

2.江苏大学,江苏镇江212013

3.江苏大学,江苏镇江212013

4.江苏大学,江苏镇江212013

5.江苏大学,江苏镇江212013

6.江苏大学,江苏镇江212013

7.江苏大学,江苏镇江212013

基金项目: 江苏大学“拔尖人才培养工程”基金(1211110001) 江苏省工业科技支撑计划项目(BE2008118)

关键词：热机械加工 , 2099铝锂合金挤压材 , 组织 , 腐蚀性能

Effect of Thermo-Mechanical Processing on Microstructure and Corrosion Resistance of 2099 Al-Li Alloy Extrusions

Zhang Zhenqiang ^1, , Xu Xiaojing ^2, , Song Tao ^3, , Zhang Yunkang ^4, , Luo Yong ^5, , Wu Yao ^6, , Deng Ping'an ^7,

1.江苏大学,江苏镇江212013

2.江苏大学,江苏镇江212013

3.江苏大学,江苏镇江212013

4.江苏大学,江苏镇江212013

5.江苏大学,江苏镇江212013

6.江苏大学,江苏镇江212013

7.江苏大学,江苏镇江212013

Keywords： TMP , 2099 Al-Li alloy extrusion , microstructure , corrosion properties

采用金相组织观察、XRD分析、硬度和导电率测试等手段,研究了热机械加工(Thermo-Mechanical Processing,TMP)对2099铝锂合金挤压材组织、硬度、导电率、晶间腐蚀及剥落腐蚀性能的影响.结果表明:与经T83 (540℃/2 h固溶、3％预压缩、121 ℃/14h+181℃/48h时效)热处理的2099铝锂合金挤压材相比,经TMP(540℃/2 h固溶、400℃/48 h过时效、约50％大应变变形、540℃/2 h再结晶/固溶)+(121℃/14 h+181℃/48 h时效)处理的2099铝锂合金挤压材发生了明显的再结晶,硬度(HV)降低(从2006.2 MPa到1865.3MPa),位错强化亦降低,但导电率和抗晶间腐蚀性能明显提高,同时抗剥落腐蚀性能也有所提高.结果表明,热机械加工是不显著降低2099铝锂合金挤压材硬度,但显著提高其抗晶间腐蚀性能的有效途径.

参考文献

[1]	Romios M;Tiraschi R;Parrish C et al.[J].JMEPEG,2005,14(05):641.
[2]	Ward N;Tran A;Abad A et al.[J].JMEPEG,2011,20(06):989.
[3]	Vander Kooi D C;Park W;Hilton M R .[J].Scripta Materialia,1999,41(11):1185.
[4]	Ortiz D;Brown J;Abdelshehid M et al.[J].ENGINEERING FAILURE ANALYSIS,2006,13:170.
[5]	Jabra J;Romios M;Lai J et al.[J].JMEPEG,2006,15(05):601.
[6]	Wei Xiuyu;Zheng Ziqiao;She Lingjuan et al.[J].Rare Metal Materials and Engineering(稀有金属材料与工程),2010,39(09):1583.
[7]	Zhu Xiaohui;Zheng Ziqiao;Zhong Shen .[J].The Chinese Journal of Nonferrous Metals(中国有色金属学报),2010,20(10):1861.
[8]	Xu Xiaojing;Wang Bin;WuGuichao et al.[J].Rare Metal Materials and Engineering(稀金属材料与工程),2011,40(z2):248.
[9]	Song Tao;Xu Xiaojing;Fan Zhen et al.[J].Chinese Journal of Rare Metals(稀有金属),2012,36(02):196.
[10]	Ma Y;Zhou X;Thompson G E et al.[J].Materials Chemistry and Physics,2011,126:46.
[11]	Humphreys F.J.; .PARTICLE STIMULATED NUCLEATION OF RECRYSTALLIZATION AT SILICA PARTICLES IN NICKEL[J].Scripta materialia,2000(7):591-596.
[12]	Humphreys F J .[J].Materials Science Forum,2004,467/470(01):107.
[13]	Humphreys F J;Hatherly M.Recrystallization and Related Annealing Phenomena[M].Oxford:Pergamon Press,2004
[14]	Clarke A P;John F;Humphreys et al.[J].Materials Science Forum,2003,426/432:399.
[15]	GB 7998-2005.Test Method for Intergranular Corrosion of Aluminum Alloy[S].,2005.
[16]	ASTM G110-1992(1997).Standard Practice for Evaluating Intergranular Corrosion Resistance of Heat Treatable Aluminum Alloys by Immersion in Sodium Chloride + Hydrogen Peroxide Solution[S].,1997.
[17]	GB/T 22639-2008.Test Method of Exfoliation Corrosion for Wrought Aluminium and Aluminum Alloys[S].,2008.
[18]	ASTM G34-2001.Standard Test Method for Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Aluminum[S].,2001.
[19]	Youssef K M;Scattergood R O;Murty K L et al.[J].Scripts Materialia,2006,54(02):251.
[20]	XU Xiao-jing,GAO Jin-qi,CHENG Xiao-nong,MO Ji-ping.Tensile properties of 2024 Al alloy processed by enhanced solid-solution and equal-channel angular pressing[J].中国有色金属学会会刊（英文版）,2006(z3):1541-1544.
[21]	Liu Yumei;Gao Yuqin;Sun Zhan et al.[J].Materials For Mechanical Engineering(机械工程材料),1998,6:11.
[22]	Li Hai;Zheng Ziqiao;Wang Zhixiu .[J].Transactions of Materials and Heat Treatment(材料热处理学报),2004,25(03):57.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网