微观组织对单轴和双轴拉伸力学性能和极限应变的影响

Journal of Mechanical Working Technology Pub Date : 1989-09-01 DOI:10.1016/0378-3804(89)90080-6

Feliks Stachowicz

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引用次数: 34

摘要

以1.0 mm厚的黄铜、铝和钢板为材料，通过拉伸试验、液压胀形和平面内拉伸试验，研究了晶粒尺寸对材料力学性能和极限应变的影响。材料的极限应变和黄铜片的力学性能与晶粒直径的平方根密切相关。黄铜、铝和St1403钢的单轴加工硬化指数n大于双轴加工硬化指数n。发现平面内拉伸和液压胀形的极限应变结果是相关的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effects of microstructure on the mechanical properties and limit strains in uniaxial and biaxial stretching

The influence of grain size on the mechanical properties and limit strains of materials has been studied in the tensile test, hydraulic bulging and in-plane stretching, using 1.0-mm thick brass, aluminium and steel sheets. The limit strains of the materials, as well as the mechanical properties of the brass sheets, were found to be closely related to the square root of the grain diameter. The values of the uniaxial work-hardening exponent $n$ for the brass, aluminium and St1403 steel were found to be larger than the biaxial $n$ -values. The results of the limit strains obtained from in-plane stretching and hydraulic bulging were found to be related.

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Journal of Mechanical Working Technology

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