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1)  contraction at fracture
断裂口收缩率
2)  necking in tension
断口收缩
3)  shrinkage on cross section
断面收缩率
1.
According to the testing and studying,ultimate strength,elongation and shrinkage on cross section of two kinds of steel bar were determined.
通过测试研究还得到两种钢筋的极限强度、延伸率和断面收缩率等其他高温力学性能参数。
4)  reduction of area
断面收缩率
1.
The brittleness temperature I of Q235G was 1300℃ to melting point and the brittleness temperature III 750~850℃, the range of brittleness temperature III was narrow, and the minimum reduction of area about 48%.
测试结果表明,Q235G钢铸坯的高温强度较小,600℃时抗拉强度约164MPa,屈服强度和抗拉强度均随测试温度降低而增大;铸坯具有良好的塑性,脆性区温度范围较窄,第I脆性温度范围为1300℃至熔点,第III脆性温度范围为750~850℃,在850~1250℃内,该钢种连铸坯的断面收缩率均大于85%。
5)  area reduction
断面收缩率
1.
By analyzing the states of two samples and smelting and rolling process, it was found out that the essential reason resulting in area reduction disqualification of Steel 45 was flake.
通过对45钢两种试样状态及冶炼、轧制工艺的分析,找出了白点是导致45钢断面收缩率不合的根本原因,钢中氢含量高是内因,轧后冷速过快是外因。
6)  notch ductility
缺口延性,缺口试样断面收缩率
补充资料:断面收缩率
分子式:
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性质:材料的塑料性指标之一。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。单位为%。

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