张舒原,吴运新,廖凯,龚海

• 1:中南大学机电工程学院
• 2:高性能复杂制造国家重点实验室

摘要(Abstract)：

采用层削法对2A12铝合金淬火厚板在预拉伸前后的残余应力进行了测定,厚板的淬火采用阵列喷淋及水浴两种方式。结果表明:两种淬火方式在厚板内部都形成了"内拉外压"的典型分布规律;喷淋方式的淬火强度相对较低,只在厚板靠近表层的地方形成了较大的残余应力,内部靠近中面的位置残余应力水平接近于0;水浴方式淬火强度更大,在厚板整个厚度上形成了单调连续分布的残余应力;预拉伸使喷淋和水浴两种淬火板内的残余应力都大幅度消减;强度更高的淬火工艺加大了板内金属力学性能的不均匀性,减弱了残余应力消减的效果。

关键词(KeyWords)： 淬火;预拉伸;2A12;铝合金;残余应力

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展规划(2012CB19505);国家重点基础研究发展规划(2010CB731703)

作者(Author): 张舒原,吴运新,廖凯,龚海

DOI: 10.13289/j.issn.1009-6264.2012.12.010

参考文献(References)：

• [1]海朝智.LY12合金预拉伸厚板残余应力的研究[J].轻合金加工技术,1995,23(1):15-18.HAI Chao-zhi.Study of residual stress in pre-stretched LY12 aluminum alloy thick plate[J].Light Alloy Fabrication Technology,1995,23(1):15-18.
• [2]王树宏,左敦稳,润长生,等.LY12,В95п.ч和7050铝合金预拉伸厚板内部残余应力分布特征评估与分析[J].材料工程,2004(10):32-35.WANG Shu-hong,ZUO Dun-wen,RUN Chang-sheng,et al.Evaluation and comparison of residual stresses in thick pre-stretched aluminum plates ofLY12,В95п.чand 7050[J].Journal of Materials Engineering,2004(10):32-35.
• [3]王树宏.航空铝合金厚板初始残余应力及其对铣削变形影响的基础研究[D].南京:南京航空航天大学,2005:41-44.
• [4]辜蕾钢,汪凌云,刘饶川.铝合金厚板预拉伸过程分析[J].轻合金加工技术,2004,32(4):27-29.GU Lei-gang,WANG Ling-yun,LIU Rao-chuan.Pre-stretch process analysis of aluminium alloy thick plate[J].Light Alloy Fabrication Technology,2004,32(4):27-29.
• [5]辜蕾钢.铝合金厚板预拉伸及淬透性研究[D].重庆:重庆大学,2004:52-60.
• [6]Pratihar S,Stelmukh V,Hutchings M,et al.Measurement of the residual stress field in MIG-welded Al-2024 and Al-7150 aluminium alloy compacttension specimens[J].Materials Science and Engineering:A,2006,437(1):46-53.
• [7]Liljedahl C D M,Brouard J,Zanellato O,et al.Weld residual stress effects on fatigue crack growth behaviour of aluminium alloy 2024-T351[J].International Journal of Fatigue,2009,31(6):1081-1088.
• [8]Zaroog O S,Ali A,Sahari B B,et al.Modeling of residual stress relaxation of fatigue in 2024-T351 aluminium alloy[J].International Journal ofFatigue,2011,33(2):279-285.
• [9]Xiao B W,Li K Y,Wang Q G,et al.Numerical simulation and experimental validation of residual stresses in water-quenched aluminum alloy castings[J].Journal of Materials Engineering and Performance,2011,20(9):1648-1657.
• [10]Xiao B W,Rong Y M,Li K Y.Experimental investigation of residual stresses in water and air quenched aluminum alloy castings[C]∥PROULX T(ed.).Conference Proceedings of the Society for Experimental Mechanics Series 17:Experimental and Applied Mechanics,Volume 6,New York:Springer,2011:193-199.
• [11]王光宇,吴运新,闫鹏飞,等.试样尺寸对淬火铝合金厚板残余应力的影响[J].材料热处理学报,2011,32(4):149-153.WANG Guang-yu,WU Yun-xin,YAN Peng-fei,et al.Influence of sampling dimension on residual stresses of aluminum alloy thick plate[J].Transactions of Materials and Heat Treatment,2011,32(4):149-153.
• [12]Prime M B,Hill M R.Residual stress,stress relief,and inhomogeneity in aluminum plate[J].Scripta Materialia,2002,46:77-82.
• [13]Wang Shu-hong,Zuo Dun-wen,Wang Min,et al.Modified layer removal method for measurement of residual stress distribution in thick pre-stretchedaluminum plate[J].Transactions of Nanjing University of Aeronautics&Astronautics,2004,21(4):286-290.
• [14]龚海,吴运新,廖凯.预拉伸对7075铝合金厚板残余应力分布的影响[J].材料热处理学报,2009,30(6):201-205.GONG Hai,WU Yun-xin,LIAO Kai.Influence of pre-stretching on residual stress distribution in 7075 aluminum alloy thick-plate[J].Transactions ofMaterials and Heat Treatment,2009,30(6):201-205.
• [15]吴运新,廖凯.铝合金厚板拉伸过程横向残余应力消减分析[J].材料工程,2009(10):45-48.WU Yun-xin,LIAO Kai.Research of transverse stress reduction in prestretching of aluminum alloy thick plate[J].Journal of Materials Engineering,2009(10):45-48.
• [16]廖凯,吴运新,龚海.淬火铝合金厚板预拉伸变形区域仿真与分析[J].材料热处理学报,2009,30(2):198-202LIAO Kai,WU Yun-xin,GONG Hai.Simulation of deformed area for pre-stretching aluminum alloy thick plates[J].Transactions of Materials andHeat Treatment,2009,30(2):198-202.
• [17]Chakrabarti D J,Wei land H,Cheney B A,et al.Through thickness property variations in 7050 plate[J].Material Science Forum,1996,217-222:1085-1090.
• [18]张新明,韩念梅,刘胜胆,等.7050铝合金厚板织构、拉伸性能及断裂韧性的不均匀性[J].中国有色金属学报,2010,20(2):202-208.ZHANG Xin-ming,HAN Nian-mei,LIU Sheng-dan,et al.Inhomogeneity of texture,tensile property and fracture toughness of 7050 aluminum alloythick plate[J].The Chinese Journal of Nonferrous Metals,2010,20(2):202-208.
• [19]王国军,熊柏青,张永安,等.2D70铝合金淬透性研究[J].稀有金属,2009,33(3):304-308.WANG Guo-jun,XIONG Bai-qing,ZHANG Yong-an,et al.Hardenability of 2D70 aluminum alloy[J].Chinese Journal of Rare Metals,2009,33(3):304-308.

文章评论(Comment)：