激光选区熔化间断扫描成形高强度316L-CuSn10多材料研究
Study on Selective Laser Melting Interrupted Scanning Forming of High-Strength 316L-CuSn10 Multi-Materials
陶亚坤 1张燚 2王晓强 3周燕 4文世峰3
作者信息
- 1. 中国地质大学(武汉)工程学院,湖北武汉 430074
- 2. 上海大学材料科学与工程学院,上海 200444
- 3. 华中科技大学材料科学与工程学院,湖北武汉 430074
- 4. 华中科技大学土木与水利工程学院,湖北武汉 430074
- 折叠
摘要
通过激光选区熔化技术制备高强度316L-CuSn10多材料试样,在界面结合处采用间断30 s、60 s的层间扫描策略,研究不同间断时间对界面结合性能的影响.实验结果表明,间断的层间扫描策略拓宽316L-CuSn10界面结合层的宽度,增强了界面的元素互溶并降低微区成分的差异,因而增强了界面的冶金结合.间断30 s的扫描策略试样的极限拉伸强度可达501.0 MPa±27.4 MPa,抗弯强度可达1 013.1 MPa,明显高于单种材料试样强度,其拉伸断口显示界面过渡区是韧性断裂和脆性断裂相结合的混合断裂模式.间断扫描策略为成形性能多样化高质量的多材料构件提供了一种新的思路.
Abstract
In this study,specimens composed of high-strength 316L-CuSn10 multimaterial were fabricated utilizing the laser se-lective melting technique.An interrupted interlaminar scanning strategy,implemented at interfacial junctions for durations of either 30 seconds or 60 seconds,was employed.The influence of varying interruption times on interfacial bonding properties was systematically examined.The empirical findings revealed that the interrupted interlayer scanning strategy effectively wid-ened the bonding layer at the steel-copper interface.Additionally,it facilitated elemental intercalation at the interface,leading to a reduction in micro-zonation compositional differences.Consequently,metallurgical bonding at the interface was notably augmented.The ultimate tensile strength of specimens subjected to the 30-second interruption scanning strategy reached an im-pressive 501.0 MPa±27.4 MPa,while the bending strength peaked at 1 013.1 MPa.These values demonstrated a substantial improvement compared to the strength of single-material specimens.The tensile fracture analysis indicated a mixed fracture mode at the interface transition zone,combining both ductile and brittle fracture characteristics.The intermittent scanning strategy represents an innovative approach for shaping multi-material components with diverse performance attributes and a-chieving high-quality outcomes.This research contributes valuable insights into advancing the fabrication of materials with en-hanced mechanical properties.
关键词
激光选区熔化/间断扫描/多材料/316L-CuSn10Key words
selective laser melting/intermittent scanning/multi-material/316L-CuSn10引用本文复制引用
基金项目
国家自然科学基金(52274400)
国家自然科学基金(52275332)
湖北省自然科学基金杰出青年项目(2023AFA073)
出版年
2024
NETL
NSTL
万方数据