Some Material Characteristics of Cold-Sprayed Structures

4区材料科学 Q2 Engineering

Advances in Materials Science and Engineering Pub Date : 2007-11-22 DOI:10.1155/2007/27347

V. Champagne, D. Helfritch, M. Trexler

引用次数: 14

Abstract

The deposition and consolidation of metal powders by means of cold spray are methods whereby powder particles are accelerated to high velocity through entrainment in a gas undergoing expansion in a rocket nozzle and are subsequently impacted upon a surface. The impacted powder particles form a consolidated structure which can be several centimeters thick. The characteristics of this structure depend on the initial characteristics of the metal powder and upon impact velocity. The influence of impact velocity on strain hardening and porosity are examined. A materials model is proposed for these phenomena, and model calculation is compared with experiment for the cold spraying of aluminum.

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冷喷涂结构的一些材料特性

金属粉末的冷喷涂沉积和固结是一种方法，通过在火箭喷嘴中膨胀的气体中夹带粉末颗粒加速到高速并随后撞击到表面。受冲击的粉末颗粒形成固结结构，可达几厘米厚。这种结构的特性取决于金属粉末的初始特性和冲击速度。研究了冲击速度对应变硬化和孔隙率的影响。针对这些现象提出了一种材料模型，并将模型计算与铝冷喷涂实验进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Materials Science and Engineering Materials Science-General Materials Science

CiteScore

3.30

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Advances in Materials Science and Engineering is a broad scope journal that publishes articles in all areas of materials science and engineering including, but not limited to: -Chemistry and fundamental properties of matter -Material synthesis, fabrication, manufacture, and processing -Magnetic, electrical, thermal, and optical properties of materials -Strength, durability, and mechanical behaviour of materials -Consideration of materials in structural design, modelling, and engineering -Green and renewable materials, and consideration of materials’ life cycles -Materials in specialist applications (such as medicine, energy, aerospace, and nanotechnology)