7075铝合金热变形抗力模型
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摘要
通过热压缩试验分析了7075铝合金不同变形温度、应变速率及应变对变形抗力的影响,并建立了7075铝合金变形抗力模型。对模型进行了分析,并与试验结果进行了对比。结果表明,变形抗力模型曲线与试验结果吻合较好。
The effects of different deformation temperature, strain rate and strain on the deformation resistance of 7075 aluminum alloy were analyzed by thermal compression test, and the deformation resistance model of 7075 aluminum alloy was established. The model was analyzed and compared with the experimental results. The results show that the deformation resistance model curves are in good agreement with the experimental results.
The effects of different deformation temperature, strain rate and strain on the deformation resistance of 7075 aluminum alloy were analyzed by thermal compression test, and the deformation resistance model of 7075 aluminum alloy was established. The model was analyzed and compared with the experimental results. The results show that the deformation resistance model curves are in good agreement with the experimental results.
引文
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[2]李英,刘建雄,柯晓涛.轧制变形抗力数学模型的发展与研究动态[J].钢铁研究,2009,37(6):59-62.
[3]杨扬,曾毅,注冰峰.基于Johson-Cook模型的TC16钛合金动态本构关系[J].中国有色金属学报,2008,18(3):505-510.
[4]Johson G R,Cook W H.High velocity oblique impact and ricochet mainly of long rod projectiles:An overview[J].International Journal of Mechanical Sciences,1982,24(7):425-436.
[5]Fields D S,Backofen W A.Determination of strain hardening characteristics by torsion testing[J].Proceedings-American Society of Testing Materials,1957,57:1259-1272.
[6]王孟君,任杰,黄电源,等.汽车用5182铝合金板材的温拉伸流变行为[J].中国有色金属学报,2008,18(11):1958-1963.
[7]权国政,刘克威,王凤彪,等.7075铝合金热压缩动态软化行为的本构模型[J].机械工程材料,2010,34(10):82-86.
[8]权国政,张光华,周杰,等.7075铝合金的热激活变形行为与唯象本构关系[J].热加工工艺,2009,38(18):22-25.
[9]Zener C,Hollomon J H.Effect of strain rate upon plastic flow of steel[J].Journal of Applied Physics,1944,15(1):22-32.
[10]Vo P,Jahazi M,Yue S,et al.Flow stress prediction during hot working of near-αtitanium alloys[J].Materials Science and Engineering A,2007,447(1):99-110.
[11]贾宝华,李革,徐振洋,等.Ti40合金的高温本构模型研究[J].热加工工艺,2018,47(2):81-85.
[12]管克智,周纪华,朱其圣,等.热轧金属塑性变形阻力研究[J].北京钢铁学院学报,1983(2):123-138.
[13]周纪华,高永生.铝合金流动应力数学模型[J].北京科技大学学报,1994(4):351-356.
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