Influence of Texture on Fatigue Crack Propagation of Er-containing Aluminum Alloy
摘 要
对含铒铝合金板材进行不同工艺的轧制及热处理, 得到了具有不同织构的铝合金板材, 再通过中心裂纹板材的高周疲劳试验, 研究了织构对合金疲劳裂纹扩展的影响。结果表明: 合金板材中织构的含量与板材轧制变形量及退火温度有关; 板材中疲劳裂纹总是倾向于沿Schmid因子较大的方向扩展; 板材中织构越多, 则晶粒间取向差角越小, 疲劳裂纹偏折越小, 裂纹扩展路径越短, 疲劳裂纹扩展速率越快; 板材中织构越少, 晶粒间取向差角越大, 疲劳裂纹偏折越厉害, 裂纹扩展路径越长, 疲劳裂纹扩展速率降低。
Abstract
Through different processes of rolling and heating treatment, the Er-containing Al alloy plates contained different types of textures were obtained. The effects of textures on the fatigue crack growth of the Al alloy plates were investigated through the high cycle fatigue test for center crack plate. The results show that the contents of textures were related to rolling deformation and annealing temperature. The fatigue crack tended to propagate along the path with large Schmid factor. The more textures the plate had, the smaller the misorientation angles between grains and the deflection of cracks became, the shorter the fatigue crack propagation path was, and the faster the fatigue crack propagation rate was. The less textures the plate had, the larger the misorientation angles between grains and the deflection of cracks became, the longer the fatigue crack propagation path was, and the lower the fatigue crack propagation rate was.
中图分类号 TG14 TG111.8 DOI 10.11973/jxgccl201506003
所属栏目 试验研究
基金项目 国家重点基础研究发展计划(973) 项目(2012CB619503)
收稿日期 2014/8/22
修改稿日期 2015/4/20
网络出版日期
作者单位点击查看
备注任鑫(1974—), 男, 辽宁锦州人, 教授, 博士。
引用该论文: LEI Xin,NIE Zuo-ren,HUANG Hui,WEN Sheng-ping. Influence of Texture on Fatigue Crack Propagation of Er-containing Aluminum Alloy[J]. Materials for mechancial engineering, 2015, 39(6): 11~15
雷欣,聂祚仁,黄晖,文胜平. 织构对含铒铝合金疲劳裂纹扩展行为的影响[J]. 机械工程材料, 2015, 39(6): 11~15
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【2】徐雪峰, 童国权. 5083铝合金在400℃的超塑性变形行为和硬化特征[J]. 机械工程材料, 2009, 33(7): 45-51.
【3】葛永成, 徐雪峰, 张杰刚. 5083铝合金的高温应变速率循环超塑性[J]. 机械工程材料, 2014, 38(8): 97-100.
【4】BROSI J K, LEWANDOWSKI J J. Delamination of a sensitized commercial Al-Mg alloy during fatigue crack growth[J]. Scripta Materialia, 2010, 63(8): 799-802.
【5】PAO P S, JONES H N, CHENG S F, et al. Fatigue crack propagation in ultrafine grained Al-Mg alloy[J]. International Journal of Fatigue, 2005, 27(11/12): 1164-1169.
【6】WATANABE C, MONZEN R, TAZAKI K. Effects of Al3Sc particle size and precipitate-free zones on fatigue behavior and dislocation structure of an aged Al-Mg-Sc alloy[J]. International Journal of Fatigue, 2008, 30(4): 635-641.
【7】RODER O, WIRTZ T, GYSLER A, et al. Fatigue properties of Al-Mg alloys with and without scandium[J]. Material Science and Engineering: A, 1997, 234: 181-184
【8】FULLER C B, KRAUSE A R, DUNAND D C, et al. Microstructure and mechanical properties of a 5754 aluminum alloy modified by Sc and Zr additions[J]. Material Science and Engineering: A, 2002, 338: 8-16.
【9】LI M J, PAN Q L, WANG Y, et al. Fatigue crack growth behavior of Al-Mg-Sc alloy[J]. Materials Science and Engineering: A, 2014, 598: 350-354.
【10】LI M J, PAN Q L, SHI Y J, et al. Microstructure dependent fatigue crack growth in Al-Mg-Sc alloy[J]. Materials Science and Engineering: A, 2014, 611: 142-151.
【11】杨军军, 聂祚仁, 金头男. 稀土铒在Al-Zn-Mg合金中的存在形式与细化机理[J]. 中国有色金属学报, 2004, 14(1): 620-626.
【12】WEN S P, XING Z B, HUANG H, et al. The effect of erbium on the microstructure and mechanical properties of Al-Mg-Mn-Zr alloy[J]. Materials Science and Engineering: A, 2009, 516: 42-49.
【13】MU P, AUBIN V, ALVAREZ-ARMAS I, et al. Influence of the crystalline orientations on microcrack initiation in low-cycle fatigue[J]. Materials Science and Engineering: A, 2013, 573: 45-53.
【14】ZHAI T, WIKINSON A J, MARTIN J W. A crystallographic mechanism for fatigue crack propagation through grain boundaries[J]. Acta Materialia, 2000, 48(20): 4917-4927.
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