منابع مشابه
Experimental Investigation of Effective Parameters at Laser Sintering the Mixture of Iron and Copper Powder
Optimization of process parameter is one of the ideal goals in laser sintering. The results of this process were measured as output parameters like: density, micro hardening, macro hardening, tension, roughness, stiffness, balling. In this paper, the influence of input parameter such as laser power, scan speed, material powder and etc are surveyed on output parameter like balling affection and ...
متن کاملExperimental Investigation of Effective Parameters at Laser Sintering the Mixture of Iron and Copper Powder
Optimization of process parameter is one of the ideal goals in laser sintering. The results of this process were measured as output parameters like: density, micro hardening, macro hardening, tension, roughness, stiffness, balling. In this paper, the influence of input parameter such as laser power, scan speed, material powder and etc are surveyed on output parameter like balling affection and ...
متن کاملOptimal control of laser hardening
We present a mathematical model for the laser surface hardening of steel. It consists of a nonlinear heat equation coupled with a system of ve ordinary diierential equations to describe the volume fractions of the occuring phases. Existence, regularity and stability results are discussed. Since the resulting hardness can be estimated by the volume fraction of martens-ite, we formulate the probl...
متن کاملThermal Analysis of Laser Hardening for Different Moving Patterns
Transient thermal field in laser surface hardening treatment of medium carbon steel was analyzed by employing both three-dimensional analytical model and finite element model. In finite element model the laser beam was considered as a moving plane heat flux to establish the temperature rise distribution in the work-piece, while in analytical model laser beam was considered as an internal heat s...
متن کاملHall-petch Hardening in Pulsed Laser Deposited Nickel and Copper Thin Films
Very fine-grained Ni and Cu films were formed using pulsed laser deposition on fised silica substrates. The grain sizes in the films were characterized by electron microscopy, and the mechanical properties were determined by ultra-low load indentation, with iinite-element modeling used to separate the properties of the layers from those of the substrate. Some Ni films were also examined after a...
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ژورنال
عنوان ژورنال: Engineering Solid Mechanics
سال: 2020
ISSN: 2291-8744,2291-8752
DOI: 10.5267/j.esm.2019.10.006