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.
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