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首页> 外文会议>Symposium on Small Specimen Test Techniques: Fourth Volume; Jan 23-25, 2000; Reno, Nevada >The Effect of Specimen Thickness and Grainsize on Mechanical Properties Obtained from the Shear Punch Test
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The Effect of Specimen Thickness and Grainsize on Mechanical Properties Obtained from the Shear Punch Test

机译：试样厚度和晶粒度对冲切试验获得的力学性能的影响

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摘要

For miniature sheet type tensile tests on 316 SS, it is well known that for thin specimens or large grains relative to the specimen thickness, the mechanical properties vary with specimen thickness and the ratio of the specimen thickness to the grainsize. However, the effects of specimen thickness and grainsize on mechanical properties obtained from the shear punch test have not yet been investigated systematically. The current study examines the effect of specimen thickness and grainsize on mechanical properties obtained from the shear punch test. Sheet stock of five different thicknesses ranging from 0.1 mm to 0.3 mm were constructed from 316 stainless steel. Two different heat treatments were used to provide two different grainsizes. Effective shear yield strength and effective shear ultimate strength were measured from shear punch tests at each thickness and grainsize. A measure of strain hardening was also obtained from the data. The results were compared to open literature data from a similar study using miniature tensile specimens. The results show that the shear punch test does not have the same sensitivity as the miniature tensile test for the range of specimen thicknesses and grainsizes examined.
机译：对于在316 SS上进行的微型片式拉伸试验，众所周知，对于薄试样或相对于试样厚度的大晶粒，机械性能会随试样厚度和试样厚度与晶粒尺寸的比率而变化。然而，样品厚度和粒度对剪切冲头试验获得的机械性能的影响尚未得到系统的研究。当前的研究检验了试样厚度和粒度对剪切冲头试验获得的机械性能的影响。用316不锈钢制成厚度范围从0.1毫米到0.3毫米的五种板材。使用两种不同的热处理来提供两种不同的粒度。有效剪切屈服强度和有效剪切极限强度是通过在每种厚度和粒度下进行的冲模试验测得的。还从数据中获得应变硬化的量度。将结果与使用微型拉伸样本的类似研究的公开文献数据进行比较。结果表明，在所测试的试样厚度和晶粒尺寸范围内，剪切冲头试验的灵敏度与微型拉伸试验不同。

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