数理科学与化学 类型
可以朗读 语音朗读
240千字 字数
2021-02-01 发行日期
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主编推荐语

金属增材制造研究：流场优化、熔池特性与激光清洗

内容简介

本书针对金属增材制造加工过程进行系统研究，基于计算流体动力学方法研究金属增材制造工艺过程中的流体问题。第1章为绪论。第2～4章研究金属增材制造打印机腔体内部流场及颗粒分布特性，并设计新颖的流体罩和负压管分别对打印机腔体内部流场进行优化及溅射颗粒清除。第5～9章主要研究金属增材制造加工过程中熔池特性，其中，第5章研究金属熔池动力学特性，第6章研究外加磁场对金属增材制造过程中熔池及凝固过程的影响，第7章和第8章研究金属增材制造过程中工件内部单气孔缺陷和多气孔缺陷的演化过程。第9章研究金属增材制造工件激光清洗工艺，以控制工件表面粗糙度。

目录

  • 封面
  • 版权信息
  • 内容简介
  • Preface
  • Chapter 1　Introduction
  • 1.1　Background
  • 1.2　Motivation
  • 1.3　Outline
  • Chapter 2　Investigation of the flow field in Laser-based Powder Bed Fusion manufacturing
  • 2.1　Introduction
  • 2.2　Simulation model of the L-PBF printer
  • 2.2.1　Problem description
  • 2.2.2　Geometric model of the L-PBF printer
  • 2.2.3　Numerical model of the L-PBF printer
  • 2.3　Simulation results
  • 2.3.1　Distribution of the flow field
  • 2.3.2　Distribution of the temperature field
  • 2.3.3　Distribution of spatter particles
  • 2.4　Conclusions
  • References
  • Chapter 3　Investigation of optimizing the flow field with fluid cover in Laser-based Powder Bed Fusion manufacturing process
  • 3.1　Introduction
  • 3.2　Simulation model of L-PBF printer
  • 3.2.1　Geometry of L-PBF printer with a fluid stabilizing cover
  • 3.2.2　Numerical model of printer with a fluid stabilizing cover
  • 3.2.3　Mesh of L-PBF printer with a fluid stabilizing cover
  • 3.2.4　Model of the fluid stabilizing cover and particles
  • 3.3　Simulation results and discussion
  • 3.3.1　Influence of the fluid stabilizing cover on the flow field
  • 3.3.2　Influence of fluid stabilizing cover on particle distribution and removing rate
  • 3.4　Summary and conclusions
  • References
  • Chapter 4　Numerical investigation of controlling spatters with negative pressure pipe in Laser-based Powder Bed Fusion process
  • 4.1　Introduction
  • 4.2　Simulation model of L-PBF printer
  • 4.2.1　Geometric model of L-PBF printer
  • 4.2.2　Numerical model of L-PBF printer
  • 4.3　Simulation results and discussions
  • 4.3.1　Effect of pipe diameter
  • 4.3.2　Effect of outlet flow rate
  • 4.3.3　Effect of initial particle velocity
  • 4.4　Summary and conclusions
  • References
  • Chapter 5　Evolution of molten pool during Laser-based Powder Bed Fusion of Ti-6Al-4V
  • 5.1　Introduction
  • 5.2　Modeling approach and numerical simulation
  • 5.2.1　Model establishing and assumptions
  • 5.2.2　Governing equations
  • 5.2.3　Heat source model
  • 5.2.4　Phase change
  • 5.2.5　Boundary conditions setup
  • 5.2.6　Mesh generation
  • 5.3　Experimental procedures
  • 5.4　Results and discussions
  • 5.4.1　Surface temperature distribution and morphology
  • 5.4.2　Formation and solidification of the molten pool
  • 5.4.3　Development of the evaporation region
  • 5.5　Conclusions
  • References
  • Chapter 6　Simulation of surface deformation control during Laser-based Powder Bed Fusion Al-Si-10Mg powder using an external magnetic field
  • 6.1　Introduction
  • 6.2　Modeling and simulation
  • 6.2.1　Modeling of L-PBF
  • 6.2.2　Mesh model and basic assumptions
  • 6.2.3　Heat transfer conditions
  • 6.2.4　Marangoni convection
  • 6.2.5　Phase-change material
  • 6.2.6　Lorentz force
  • 6.3　Results
  • 6.3.1　Velocity field in the molten pool
  • 6.3.2　Lorentz force in the MP
  • 6.3.3　Surface deformation of the sample
  • 6.4　Conclusions
  • References
  • Chapter 7　Influence of laser postprocessing on pore evolution of Ti-6Al-4V alloy by Laser-based Powder Bed Fusion
  • 7.1　Introduction
  • 7.2　Experimental procedures
  • 7.2.1　Sample fabrication
  • 7.2.2　Determination of porosity by micro-CT
  • 7.3　Modeling and simulation
  • 7.3.1　Numerical model
  • 7.3.2　Moving Gaussian heat source
  • 7.3.3　Thermal boundary conditions
  • 7.3.4　Marangoni effect，surface tension and recoil pressure
  • 7.4　Numerical results and discussion
  • 7.5　Conclusions
  • References
  • Chapter 8　Evolution of multi pores in Ti-6Al-4V/Al-Si-10Mg alloy during laser post-processing
  • 8.1　Introduction
  • 8.2　Experimental procedures
  • 8.2.1　Sample preparation
  • 8.2.2　Detection of porosity by mirco-CT
  • 8.3　Model and simulation
  • 8.3.1　Simulation model
  • 8.3.2　Gaussian heat source
  • 8.3.3　Latent heat of phase change
  • 8.3.4　Level-set method
  • 8.3.5　Boundary conditions
  • 8.4　Numerical results and discussion
  • 8.5　Conclusions
  • References
  • Chapter 9　Investigation of laser polishing of four Laser-based Powder Bed Fusion alloy samples
  • 9.1　Introduction
  • 9.2　Model and theoretical calculation
  • 9.2.1　Physical model and assumptions
  • 9.2.2　Governing equations and boundary conditions
  • 9.2.3　Simulation results
  • 9.3　Experimental methods
  • 9.3.1　Sample fabrication
  • 9.3.2　Morphology observation by 3D optical profiler
  • 9.3.3　Experimental results
  • 9.4　Conclusions
  • References
  • 反侵权盗版声明
  • 封底
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电子工业出版社

电子工业出版社成立于1982年10月，是国务院独资、工信部直属的中央级科技与教育出版社，是专业的信息技术知识集成和服务提供商。经过三十多年的建设与发展，已成为一家以科技和教育出版、期刊、网络、行业支撑服务、数字出版、软件研发、软科学研究、职业培训和教育为核心业务的现代知识服务集团。出版物内容涵盖了电子信息技术的各个分支及工业技术、经济管理、科普与少儿、社科人文等领域，综合出版能力位居全国出版行业前列。