AHSS: A Multiresolution Analysis of the Particle Size and Interface Effects on the Strength and Ductility of Advanced High Strength Steels

AHSS：颗粒尺寸和界面对先进高强度钢强度和延展性影响的多分辨率分析

• 批准号: 0728032
• 负责人: Rashid Abu Al-Rub
• 金额: $ 22.61万
• 依托单位: Texas A&M Engineering Experiment Station
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-06-15 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0728032&HistoricalAwards=false
• 关键词: AHSS; Multiresolution; Analysis; Particle; Size

The main objective of this research project is the development at different length scales a fundamental understanding of the strengthening (strain hardening) and micro-damage evolution (strain softening) mechanisms that control the strength and ductility of Advanced High Strength Steels (AHSS) through integration of theory and computational simulation focusing on how the sizes and the interfaces of micro- and nano-level inclusions (particles) influence the overall macroscopic properties of AHSS. This objective will be achieved by developing robust multi-scale theoretical and computational techniques that can be used to effectively predict the effects of microstructural features on the overall macroscopic mechanical properties of multi-phase materials.Results from this project will impact the widespread development and design of new generations of AHSS that are expected to broadly impact the automobile, aerospace, infrastructure, energy, and defense technologies by manufacturing lightweight and stronger (i.e. longer life) systems. This research project is also expected to provide hands-on experience for undergraduate and graduate education in the field of new generation materials and state-of-the-art computational capabilities at the micron and submicron length scales. As a direct result of this work, it is expected that numerous journal articles will be published, as well as numerous workshops and presentations will be made.

该研究项目的主要目标是在不同长度尺度上发展对加强（应变硬化）和微观损伤演化通过理论和计算模拟的结合，研究了控制先进高强度钢（AHSS）强度和塑性的应变软化机制，重点关注微米级和纳米级夹杂物的尺寸和界面如何影响AHSS的强度和塑性。（颗粒）影响AHSS的整体宏观性质。这一目标将通过发展强大的多尺度理论和计算技术来实现，这些技术可用于有效地预测微观结构特征对多相材料整体宏观力学性能的影响。该项目的结果将影响新一代AHSS的广泛开发和设计，预计将广泛影响汽车，航空航天，基础设施，能源，和国防技术，制造重量轻，更强（即更长的寿命）的系统。该研究项目还有望为新一代材料领域的本科生和研究生教育以及微米和亚微米长度尺度的最先进计算能力提供实践经验。作为这项工作的直接成果，预计将发表许多期刊文章，并将举办许多讲习班和演讲。