评价梯度纳米结构材料力学性能的小冲压试验影响因素研究

IF 1.8 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Xinjun Yang, Xiangwei Liao, Dongxiang Wang, Jiyun Du, Fangyang Yuan, Wei Yu, Qingsheng Li
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引用次数: 0

摘要

为评估梯度纳米结构(GNS)材料的力学性能,研究了小冲压试验(SPT)的影响因素。通过超声冲击处理(UIT)在 S30408 奥氏体不锈钢表层制备了梯度纳米结构。使用 SPT 获得了 GNS 材料的机械性能,并将其与标准拉伸试验获得的机械性能进行了对比。结果表明,当试样厚度为 0.5 毫米、球体直径为 2.4 毫米、冲头速度为 0.5 毫米/分钟-1、梯度纳米晶粒层正面置于模具中时,GNS 材料表现出更好的塑性变形能力。SPT 试样获得了更好的承载能力,通过 SPT 获得的 GNS 材料的力学性能也更加精确。GNS 材料的屈服强度和抗拉强度也是通过 SPT 中的分析和经验方法进行评估的。与标准拉伸试验结果相比,误差约为 10%,在允许范围内。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Research on influence factors of small punch test to evaluate the mechanical properties of gradient nanostructured material
The influence factors of small punch test (SPT) were investigated to evaluate the mechanical properties of gradient nanostructured (GNS) materials. The gradient nanostructure was prepared on the top layer of S30408 austenitic stainless steel by ultrasonic impact treatment (UIT). The mechanical properties of the GNS material were obtained using SPT and correlated with those obtained by standard tensile tests. The results indicate that, when the specimen thickness is 0.5 mm, the sphere diameter is 2.4 mm, the punch velocity is 0.5 mm min−1, and the gradient nano-grained layer is placed face-on in the mold, the GNS material exhibits better plastic deformability. The SPT specimen achieves better bearing capacity, and the mechanical properties of the GNS material obtained by SPT are more accurate. The yield strength and tensile strength of the GNS material were also evaluated by analytical and empirical methods in SPT. The error is approximately 10% compared with the standard tensile test results, which is within the allowable range.
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来源期刊
Materials Research Express
Materials Research Express MATERIALS SCIENCE, MULTIDISCIPLINARY-
CiteScore
4.50
自引率
4.30%
发文量
640
审稿时长
12 weeks
期刊介绍: A broad, rapid peer-review journal publishing new experimental and theoretical research on the design, fabrication, properties and applications of all classes of materials.
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