拉拔过程中镁合金丝的组织演变规律研究材料成型及控制工程毕设论文.doc

单位代码 学 号 分 类 号 密 级 毕业论文 院（系）名称 工学院机械系 专 业 名 称 材料成型控制工程 学 生 姓 名 指 导 教 师 2015年月日  Drawing Process of Magnesium Alloy Silk Organization Evolution Law Research Author： Magnesium ion concentration in human body (0. 7 ~ 1. 0 mol/L) is negligible, non-toxic to human body. If will made magnesium alloy stent materials, magnesium alloy used for cardiovascular disease and coronary artery lesions in patients with intravascular, magnesium alloy will resume after the blood vessels in dissolved in blood and release over time. And because of the blood flow, endovascular stent materials will need certain flexibility and strength of the radial support. As a result, the preparation of magnesium alloy will be used for biomedical scaffold materials are of great value. Process organization evolution law research, studied the drawing of AZ31 magnesium alloy wire deformation and deformation after recrystallization, make get fine granular magnesium alloy, in order to improve the comprehensive performance of magnesium alloy. Research on magnesium alloy after the drawing of the original grain size and the influence of the deformation degree of recrystallization grain size, and the effect of original grain size on the recrystallization temperature, and got a lot of data of the practical significance of the industrialization of magnesium alloy wire. Keywords:Drawing ,Magnesium alloy wire ,Cold drawn ,Annealing, Recrystallization 目 录 1 绪 论 1 1.1 前言 1 1.2 选题的背景和意义 1 1.3 镁合金的变形特点 1 1.4 镁合金拉拔工艺的研究现状 2 1.5 拉拔工艺 3 1.5.1 拉拔的特点及方法 3 1.5.2 拉拔工艺的分类 5 1.5.3 拉拔工艺的历程和研究现状 5 1.6 本次研究的主要内容 6 2