集成微观结构和双构成模型在仪器入技术中,用于金属材料的机械性能评估
Yubiao Zhang1,2, Bin Wang2, Yonggang Zhang3
1School of Mechanical Engineering, Xi'an University of Science and Technology, 58 Yanta Road, Xi'an 710054, China.
Materials (Basel, Switzerland)
|September 13, 2025
概括
这项研究通过整合微观结构分析和特定材料的模型来增强仪器入技术 (IIT). 这提高了在工程钢中预测局部机械性能的准确性.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 结构完整性评估 结构完整性评估
背景情况:
- 由于制造和服务条件,机械性能的局部变化在工程结构中很常见.
- 准确的机械性能评估对于结构完整性至关重要.
- 仪器入技术 (IIT) 对现场测试有价值,但将入数据与单轴应力-应变行为相关联是具有挑战性的.
研究的目的:
- 量化研究金属的缩反应和塑性特性之间的关系.
- 开发适用于线性,功率定律或组合硬化模型的获得机械性能的方法.
- 提出一种综合的IIT方法,包括微观结构和特定材料的构成模型.
主要方法:
- 利用有限元反转来分析缩反应和塑料特性之间的联系.
- 开发了基于不同硬化行为微结构分析的机械性质获取方法.
- 集成的微观结构信息与特定材料的构成模型进入IIT框架.
主要成果:
- 成功地将线性和功率规律硬化表现出的金属的缩反应与塑料特性相关联.
- 拟议的综合IIT方法证明了对产量强度和应变硬化指数的准确预测.
- 预测的偏差在10%以内,工程钢的最大误差为12%.
结论:
- 开发的方法为获得适合各种硬化模型的机械性能提供了一个框架.
- 综合的IIT方法有效地解释了微观结构的演变和硬化行为.
- 这项研究提升了IIT能力,用于改进工程材料的结构完整性评估.
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