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Laser material processing

机译：激光材料加工

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摘要

Light amplification by stimulated emission of radiation (laser) is a coherent and monochromatic source of electromagnetic radiation that can propagate in a straight line with negligible divergence. As a result, laser finds diverse applications ranging from mere mundane to most sophisticated uses either for totally commercial or purely scientific purposes, and from life saving to life threatening causes. High power lasers can produce intense heating and perform various manufacturing operations or material processing. The present contribution provides an overview of the application of high power laser only for material processing in engineering applications, and intentionally excludes the scope of application of laser in metrology, biomedical technology, spectroscopy, etc. The manufacturing processes covered have been broadly divided into four major categories, namely, laser assisted forming, joining, machining and surface engineering. Besides discussing the scope and principle of these processes, each section enumerates a detailed update of literature, scientific issues and technological innovations. At the beginning, a brief introduction to different types of lasers and their general applications, fundamentals of laser-matter interaction and classification of laser material processing has been provided. The entire discussion primarily focuses on correlating the properties with processing parameters and microstructure and composition of the material.
机译：受激辐射（激光）的激发引起的光放大是电磁辐射的相干单色源，可以沿直线传播而发散可忽略不计。结果，激光发现了从纯粹的普通用途到最复杂的用途（无论是出于商业目的还是纯粹出于科学目的）以及从挽救生命到威胁生命的各种用途。高功率激光器会产生强烈的热量，并执行各种制造操作或材料处理。本文稿概述了仅在工程应用中的材料加工中使用大功率激光的应用，有意排除了激光在计量，生物医学技术，光谱学等领域的应用范围。所涵盖的制造工艺大致分为四个主要类别，即激光辅助成型，连接，机械加工和表面工程。除了讨论这些过程的范围和原理外，每个部分还列举了文献，科学问题和技术创新的详细更新。首先，简要介绍了不同类型的激光及其一般应用，激光物质相互作用的基础知识和激光材料加工的分类。整个讨论主要集中在将特性与加工参数以及材料的微观结构和组成相关联。

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