Progressive developments, challenges and future trends in laser shock peening of metallic materials and alloys: A comprehensive review

Performance-control-orientated hybrid metal additive manufacturing technologies: state of the art, challenges, and future trends

“…Thirdly, the integration of multi-systems including AM, IPD and online monitoring also could not be realized without the assistance of robotic automation. In addition, on the level of quality control [4,244], the development and application of process monitoring is also necessary. Initially, the utilization of charge coupled device cameras or infrared cameras in the process of AM as an in-situ detection and the adjustment of corresponding input parameters according to the detection feedback has become an important guarantee of forming quality.…”

“…The common objective of HAM is to broaden the application range of metal AM by overcoming limitations related to inadequate mechanical performance, randomly distributed internal defects, undesired microstructures, relatively low forming precision, and rough surfaces by combining AM with other manufacturing technologies. From another perspective, hybridization concerning AM and material removal methods can be regarded as an approach that enhances flexibility and reduces material wastage in traditional subtractive manufacturing processes [4]. According to the CIRP definition, the scope of HAM encompasses four main categories: (1) HAM with multiple energy sources [5,6] for defect suppression and regulation of microstructural growth during the molten pool stage, (2) HAM with forming/deformation processes [7,8] for defect elimination and mitigation of anisotropic microstructures after solidification, (3) HAM with material removal processes [9,10] for smoothing rough surfaces and achieving dimensional precision after specific shape formation, and (4) HAM with interlayer cooling [11,12] for heat accumulation alleviation and residual stress relaxation.…”

Fabrication of Smart Materials Using Laser Processing: Analysis and Prospects

“…To create smart materials, laser modification can be carried out in several ways. Laser shock treatment is used to form gradient nanostructures in the surface layer, which is one of the methods of surface intensive plastic deformation under extreme conditions [57,58]. Laser hardening selectively heats the material's surface to enhance its hardness and wear resistance, resulting in smart materials with improved durability and resistance to wear and tear [59][60][61].…”