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【求助】 怎么表征金属的延展性
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本人有一铝箔(40微米),想对其延展性进行表征? 不知道 有没有什么方法适用? 能用断裂伸长率说明么? 呵呵 如有 国标或国际标 标准指导最佳。 (*^__^*) 有虫子说 延展性可以用 塑性来反映。 塑料测试 一般做什么测试? 断裂伸长率? 断面收缩率? 请砖家解答 呵呵 [ Last edited by dollyyang on 2008-11-10 at 10:28 ] |
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2楼2008-10-31 13:39:08
3楼2008-11-06 08:19:07
4楼2008-11-07 11:55:55
jeffrey6123
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延展性是不能具体表征的,通常通过塑性指标能够定性说明延展性大小。 Ref.: It is extremely difficult to use the results from these tests analytically to accurately describe plastic deformation in other applications. This drawback is being addressed by instrumented indentation test standards (ISO 14577 (Metallic materials – Instrumented indentation test for hardness and materials parameters) [7.62] and efforts underway at ASTM). The commercial importance of hardness testing cannot be underestimated and justifies an entire Sect. 7.3 devoted entirely to hardness. |
5楼2008-11-07 20:42:43
jeffrey6123
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The ductility cannot be estimated by any means. It is extremely difficult to use the results from these tests analytically to accurately describe plastic deformation in other applications. This drawback is being addressed by instrumented indentation test standards (ISO 14577 (Metallic materials – Instrumented indentation test for hardness and materials parameters) [7.62] and efforts underway at ASTM). The commercial importance of hardness testing cannot be underestimated and justifies an entire Sect. 7.3 devoted entirely to hardness. |
6楼2008-11-07 20:45:20
7楼2008-11-07 21:23:11
materialmg 
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8楼2008-11-09 15:50:07













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