断面收缩率

1
reduction of area
3.4 断面收缩率 ( reduction of area ):材料的塑性指标之一。材料受拉力断裂时断面缩小，断面缩小的面积与原面积之比值叫 断面收缩率 ，以ψ表示。
2
percentage reduction of area
断面收缩率(percentage reduction of area)断面收缩率是试样拉断后，缩颈处横截面积的最大缩减量与原始横截面积的百分比。
3
reduction of cross section
... Redrawing 二次拉深 Reduction of cross section 断面收缩率 Redundant work(deformation) 多余功（变形） ...
4
reduction of cross sectional area
...permanent relative reduction of area 断面收缩率 reduction of cross sectional area 断面压缩率 ; 断面收缩率 percentage of area reduction 缩面百分率 ; 断面收缩率 ; 面积收缩百分比 ; 面积缩减率 ..

短语

1
为了成形大断面收缩率轴类零件，进行了楔横轧二次楔入试验。
For the sake of the axis accessory's figuration, the experiment of second wedge heavy section shrinkage was carried out.
2
钢板的抗层状撕裂性能采用厚度方向拉力试验的断面收缩率来评定。
The steel plate 'performance in the lamellar tearing resistance aspect can be assessed by reduction in area when doing tension test of through-thickness.
3
该研究拓宽了楔横轧加工界限，对大断面收缩率产品的开发有重要意义。
This study result widens the processing limit of cross wedge rolling and is of momentous significance to develop heavy section shrinkage products of cross wedge rolling.

断面收缩率
断面收缩率是衡量材料塑性变形能力的性能指标。采用标准拉伸试样测试。试样拉断时颈缩部位的截面积与原始截面积之差，除以原始截面积之商的百分数即为断面收缩率。该值愈大说明材料的塑性愈好，对于锅炉、压力容器受压元件及其他重要工程构件的材料必须严格控制该值。

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