通过激光诱导的热梯度对Z10C13钢进行分级的脆性-柔性过渡,用于削Z10C13钢
Guozhen Liu1, Zhen Meng1, Junqiang Zheng1
1School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
Micromachines
|February 27, 2026
概括
激光失焦在马氏体不钢上产生表面脆化层,增强硬度,在常规速时改善表面表面. 这一突破使难以切割材料的精密加工成为可能.
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:
- 马丁性不钢 (Z10C13) 由于其性,很难加工.
- 传统的刺速度往往导致这种材料的表面质量差,切削力高.
- 激活皮肤效应对于提高加工性能至关重要.
研究的目的:
- 为了在传统的开口速度 (1-8米/分钟) 达到皮肤效果.
- 通过激光失焦梯度修改,在马性不钢Z10C13中诱导表面脆化.
- 为了提高难以切割的材料的精密加工.
主要方法:
- 激光失焦梯度修改被应用,以创建一个50微米的重层.
- 微结构分析特征超细粒 (0.8微米) 和高密度的几何必要脱位 (GND) 区域 (ρGND = 2.27微米-3).
- 通过低角粒边界 (28.4%的LAGBs) 通过脱位钉诱导准裂纹骨折.
主要成果:
- 表面硬度增加了12.95% (至31.4HRC).
- 切割力减少了34.07%的时间.
- 表面粗度 (Sz) 提高了63.74% (至28.80微米),由于裂曲折而形成了一个没有裂的地下区域.
结论:
- 激光诱导的表面脆化有效地激活了皮肤效应在传统的开速度.
- 软化-硬化二分法为难以切割的材料的精密加工提供了一个可行的策略.
- 这种方法显著提高了表面完整性,并减少了加工力.
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