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首页> 外文期刊>International Journal of Microstructure and Materials Properties >Forming limit analysis of AISI 316LN-austenitic stainless steel
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Forming limit analysis of AISI 316LN-austenitic stainless steel

机译：AISI 316LN-奥氏体不锈钢的成形极限分析

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摘要

Forming limit diagram (FLD) is an essential tool to evaluate the formability of sheet metals in various strain conditions. In this work, FLDs of two austenitic stainless steels of grades AISI 316L and 316LN of thickness 1 mm and 1.25 mm have been studied and their suitability for forming applications have been examined. From the experimental FLDs it is observed that 1.25 mm thickness sheet posses more formability than 1 mm sheet for both 316L and 316LN stainless steels. The micro structural aspects, tensile properties and formability parameters arc experimentally determined and studied. Effect of nitrogen present in the 316LN stainless steel increases the strength and decreases the formability. The limiting strains for these steels under different strain conditions are analysed. The fracture surfaces of the formed samples in three different strain conditions namely tension-tension, plane strain and tension-compression regions are studied using scanning electron microscope (SEM). The SEM images are correlated with the fracture behaviour and formability of the sheet metal.
机译：成形极限图（FLD）是评估各种应变条件下钣金成形性的必要工具。在这项工作中，研究了两种AISI 316L和316LN级厚度为1 mm和1.25 mm的奥氏体不锈钢的FLD，并研究了其在成型应用中的适用性。从实验FLD中可以看出，对于316L和316LN不锈钢，厚度为1.25 mm的钢板比1 mm的钢板具有更高的成形性。通过实验确定和研究了微观结构，拉伸性能和可成形性参数。 316LN不锈钢中存在的氮影响会提高强度并降低可成形性。分析了这些钢在不同应变条件下的极限应变。使用扫描电子显微镜（SEM）研究了在三种不同的应变条件下，即拉伸-拉伸，平面应变和拉伸-压缩区域，所形成样品的断裂表面。 SEM图像与金属板的断裂行为和可成形性相关。

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