| LY12CZ板材冷挤压强化孔边残余应变场变化初探 |
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| 引用本文： | 林影,吴富民,邢文珍.LY12CZ板材冷挤压强化孔边残余应变场变化初探[J].航空学报,1994,15(2):219-221. |
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| 作者姓名： | 林影 吴富民 邢文珍 |
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| 作者单位： | 沈阳航空工业学院航空系，西北工业大学 |
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| 摘 要： | 用实测方法初步探讨了ＬＹ１２ＣＺ板材冷挤压强化孔边残余应变场在３种不同交变应力幅作用下的衰减变化情况。结果表明：沿与作用应力垂直且过孔中心的轴线,孔边切向残余应变分量符合幂函数分布规律；在交变载荷作用下,当孔边实际最大应力小于材料屈服极限时,残余应变场在一定次数循环载荷作用下,会有一个突变性衰减变化,而且距孔边距离越近,衰减程度越严重。
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| 关 键 词： | 挤压 残余形变 应变硬化 |
EXPERIMENTAL INVESTIGATION ON CHANGE OF COLDWODKING RESIDUAL STRAIN OF HOLE IN ALUMINIUM ALLOY SHEET |
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| Lin ying.EXPERIMENTAL INVESTIGATION ON CHANGE OF COLDWODKING RESIDUAL STRAIN OF HOLE IN ALUMINIUM ALLOY SHEET[J].Acta Aeronautica et Astronautica Sinica,1994,15(2):219-221. |
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| Authors: | Lin ying |
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| Affiliation: | 1. Shenyang Institute of Aeronautical Engineering,shenyang,110031;2. 5th Departmant,Northwestern Polytechnical University,Xi’an,710072 |
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| Abstract: | In this paper,an experimental study on degeneration of the coldworking residual strain during different cyclic loadings is presented.The experimental results obtained show that the residual strain distribution of squeezing follows a power series law ε=axb |
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| Keywords: | extruding residual strain strain hardening |
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