| 反向加载时X70钢的力学性能 |
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| 引用本文： | 贾普荣,李年,朱维斗.反向加载时X70钢的力学性能[J].机械强度,2005,27(1):82-84. |
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| 作者姓名： | 贾普荣 李年 朱维斗 |
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| 作者单位： | 1. 西北工业大学,工程力学系,西安,710072
2. 西安交通大学,材料学院,西安,710049 |
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| 基金项目： | 国家自然科学基金资助项目 (50 1 71 0 50 )~~ |
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| 摘 要： | 分析国产X70管线钢板承受正向和反向加载时的力学性能，对加载曲线及其包申格效应进行研究，根据测试结果，给出X70钢材在不同预变形下的应力-应变关系式以及力学参数；通过数据处理，得到反向加载时屈服强度降幅△σ0.5随预塑性应变εpp变化的经验公式。
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| 关 键 词： | 管线钢 包申格效应 应力-应变关系 |
MECHANICAL PROPERTIES OF X70 PIPELINE STEEL AT REVERSE LOADING |
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| JIA PuRong.MECHANICAL PROPERTIES OF X70 PIPELINE STEEL AT REVERSE LOADING[J].Journal of Mechanical Strength,2005,27(1):82-84. |
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| Authors: | JIA PuRong |
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| Abstract: | The mechanical properties of X70 pipeline steel plate has been studied at the forward and reverse loading conditions. The stress-strain relationship and Bauschinger effect were investigated. The results showed that the stress-strain relationship of X70 changed with the different pre-deformation amplitudes. The experiential formula of the relationship between the yield strength reduction and the pre-plastic strain amplitude was derived from the data processing. |
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| Keywords: | Pipeline steel Bauschinger effect Stress-strain relationship |
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