评估金属表面增强层中的残余应力,基于部分基板剥离后的样本变形
Dejun Li1, Yuchi Lei2, Jiangzhuo Ren2
1State Key Laboratory of Oil and Gas Equipment, CNPC Tubular Goods Research Institute, Xi'an 710077, China.
Materials (Basel, Switzerland)
|March 14, 2026
概括
一种新的基于变形的方法准确地测量了强化钢层的残余应力和厚度. 与现有方法相比,这种技术提供了更简单的准备和精简的程序.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 表面工程是什么?表面工程是什么?
背景情况:
- 强化层中的残余应力显著影响材料性能和耐用性.
- 精确测量残余应力和层厚度对于质量控制和性能预测至关重要.
- 现有的残余应力测量方法可能是复杂的,耗时的,或不适合某些几何形状.
研究的目的:
- 开发和验证一种基于变形的新方法,用于测量表面增强层的残余应力和厚度.
- 将拟议的方法与已建立的X射线电化学腐蚀剥离方法 (X-/ECSM) 进行比较.
- 评估材料分析新技术的可行性和优势.
主要方法:
- 一种基于变形的方法,利用部分基板去除后表面曲率的变化.
- 在45Mn和16Mn钢样本中测量残余应力和层厚.
- 与X射线电化学腐蚀剥离方法 (X-/ECSM) 的比较分析.
主要成果:
- 提出的方法与X-/ECSM具有可接受的一致性,残余应力最大差异为19.7%,厚度最大差异为17.6%.
- 通过对钢样进行比较测量,验证该方法的可行性.
- 确定了优势,包括更简单的样品准备,更好的加工精度控制和更简单的程序.
结论:
- 开发的基于变形的方法是一种可行且有效的技术,用于测量强化层中的残余应力和厚度.
- 新方法比古典技术具有实用优势,特别是对于更简单的几何形状和特定应用.
- 限制包括其破坏性,无法确定应力分布,不适合复杂的几何形状.
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