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Processing routes, resulting microstructures, and strain rate dependent deformation behaviour of advanced high strength steels for automotive applications
Archives of Civil and Mechanical Engineering ( IF 4.4 ) Pub Date : 2021-01-03 , DOI: 10.1007/s43452-020-00149-4
Tarun Nanda , Vishal Singh , Gurpreet Singh , Manpreet Singh , B. Ravi Kumar

Automobile industry is continuously striving to obtain light body-in-white structures to meet tightened regulations on flue-gas emissions/crash-testing parameters. ‘Advanced high strength steels (AHSS)’ find increased applications in the automotive industry because of improved crashworthiness/formability at reasonably low costs. AHSS category mainly includes transformation induced plasticity (TRIP) steels, twinning induced plasticity (TWIP) steels, dual phase (DP) steels, complex-phase (CP) steels, and quenching-partitioning (Q&P) steels. AHSSs provide superior strength-ductility combination than conventional high-strength steels by virtue of their multi-phase microstructures. Mechanical properties of AHSSs are greatly influenced by processing routes/derived microstructures. Furthermore, mechanical properties/tensile deformation behavior are also strain rate dependent. During an automobile crash, deformation occurs at strain rates which are exceedingly higher than quasi-static conditions. So, investigation of AHSS properties under both quasi-static as well as high strain rates conditions is important to check applicability for superior crash-resistance. The present work critically reviews details of processing routes, room temperature microstructures, mechanical properties, and finally strain rate dependence of tensile deformation behaviour of AHSSs. Finally, main gaps in existing literature/scope for future research with regards to high strain rate deformation dependent properties of this steel category are presented.



中文翻译:

汽车应用高级高强度钢的加工路线,所得的微结构和应变率相关的变形行为

汽车工业一直在努力获得轻质的白车身,以满足对废气排放/碰撞测试参数的严格规定。“先进的高强度钢(AHSS)”由于在较低的成本下提高了耐撞性/成形性而在汽车行业得到了越来越多的应用。AHSS类别主要包括相变诱发塑性(TRIP)钢,孪生诱发塑性(TWIP)钢,双相(DP)钢,复相(CP)钢和淬火分区(Q&P)钢。由于其多相微结构,AHSS比常规高强度钢具有更高的强度-延展性组合。AHSS的机械性能受加工路线/衍生的微观结构的影响很大。此外,机械性能/拉伸变形行为也取决于应变率。在汽车碰撞中,变形会以比准静态条件高得多的应变率发生。因此,在准静态和高应变率条件下研究AHSS特性对于检查抗冲击性的适用性很重要。本工作严格审查了加工路径,室温微结构,机械性能,最后是AHSS拉伸变形行为的应变率依赖性的详细信息。最后,介绍了现有文献/研究中与该钢种的高应变速率变形相关性能有关的主要空白。变形发生在比准静态条件高得多的应变率下。因此,在准静态和高应变率条件下研究AHSS特性对于检查抗冲击性的适用性很重要。本工作严格审查了加工路径,室温微结构,机械性能,最后是AHSS拉伸变形行为的应变率依赖性的详细信息。最后,介绍了现有文献/研究中与该钢种的高应变速率变形相关性能有关的主要空白。变形发生在比准静态条件高得多的应变率下。因此,在准静态和高应变率条件下研究AHSS特性对于检查抗冲击性的适用性很重要。本工作严格审查了加工路径,室温微结构,机械性能,最后是AHSS拉伸变形行为的应变率依赖性的详细信息。最后,介绍了现有文献/研究中与该钢种的高应变速率变形相关性能有关的主要空白。本工作严格审查了加工路径,室温微结构,机械性能,最后是AHSS拉伸变形行为的应变率依赖性的详细信息。最后,介绍了现有文献/研究领域中与该钢种的高应变速率变形相关性能有关的主要差距。本工作严格审查了加工路径,室温微结构,机械性能,最后是AHSS拉伸变形行为的应变率依赖性的详细信息。最后,介绍了现有文献/研究中与该钢种的高应变速率变形相关性能有关的主要空白。

更新日期:2021-01-03
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