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一种适用于率相关晶体塑性模型的准隐式积分算法
  • ISSN号：1674-6457
  • 期刊名称：精密成形工程
  • 时间：0
  • 页码：1-5+65
  • 分类：TG139.8[金属学及工艺—合金;一般工业技术—材料科学与工程;金属学及工艺—金属学]
  • 作者机构：[1]上海交通大学,上海200030
  • 相关基金：National Science Foundation of China（50835002,50975174）
  • 相关项目：微型构件精密塑性微成形关键技术与基础理论
作者： 章海明, 董湘怀|
关键词： 等温挤压, 非晶结构, 热特性, 过冷液态, 成形, isothermal extrusion process, amorphous structure, thermal properties, supercooled liquid state, forming
中文摘要：

在703K对Zr55Al10Ni5Cu30大块非晶合金进行不同挤压速度的等温挤压实验,Zr55Al10Ni5Cu30大块非晶合金的高温本构模型用一种简单的扩展指数模型来描述,并将该本构模型代入有限元软件模拟挤压过程;在挤压稳定阶段,模拟结果与实验结果非常吻合;在不同挤压速度下,Zr55Al10Ni5Cu30大块非晶合金未发生明显晶化,但挤压试样的过冷液相区间随挤压时间的增加而减小。

英文摘要：

Isothermal extrusion process of Zr55Cu30Al10Ni5 bulk metallic glass（BMG） has been performed at 703 K at various extrusion velocities.A simple stretched exponential function has been developed to describe the rheological properties of Zr55Cu30Al10Ni5 BMG and implemented into the finite element code to simulate the extrusion process.The simulated results are concordant with the experimental curve during the steady-state extrusion process.The extrusion at different velocities does not induce the perceptible crystallization.The supercooled liquid state（SCL） region △T of the extruded samples is reduced with the increase of the extrusion time.

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微型构件精密塑性微成形关键技术与基础理论
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晶体塑性模型的改进及其在微成形工艺研究中的应用
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期刊信息
  • 《精密成形工程》
  • 主管单位:中国兵器装备集团公司
  • 主办单位:中国兵器工业第五九研究所 国防科技工业精密塑性成形技术研究应用中心
  • 主编：吴护林
  • 地址：重庆市九龙坡区石桥铺渝州路33号
  • 邮编：400039
  • 邮箱：jmcxgc@163.com
  • 电话：023-68792294
  • 国际标准刊号：ISSN：1674-6457
  • 国内统一刊号：ISSN：50-1199/TB
  • 邮发代号:78-235
  • 获奖情况:
  • 国内外数据库收录:
  • 被引量:945