1420cs铝锂合金型材力学特性测试

Experimental Study on Mechanical Properties of 1420cs Al-Li Alloy Moulding Material

用电测的方法 ,得到了材料的应力与纵向应变曲线及横向应变与纵向应变曲线 ,判读出σ0 2 、σb、E、μ ,测试结果表明 :过比例伸长应力后 ,横向变形有明显跳动 ,这种特性有别于其他材料 ,使用中应予注意 ;测试了表面裂纹的断裂韧度。

The stress longitudinal strain curves are tested using electrical measuring technique. The relations of transverse strain and longitudinal strain are also examined. Some properties such as σ 0 2 ,σ b,E and μ are derived. Testing results indicate that transverse strain has distinct jumpiness when stress exceeds proportional elongation point. The properties of the material are different from others.The fracture toughness of surface crack is also tested.