半固态材料宏观力学响应的细观力学研究

余小鲁; 王仲珏; 张海涛; 朱协彬

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半固态材料宏观力学响应的细观力学研究
Micro-mechanical Properties of Macro-mechanical Response of Semi-solid Materials
2009年29卷第8期页码：706-708
纸质出版日期： 2009 ，
DOI：

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[1]余小鲁,王仲珏,张海涛,朱协彬.半固态材料宏观力学响应的细观力学研究[J].特种铸造及有色合金,2009,29(08):706-708+681.

Yu Xiaolu, Wang Zhongjüe, Zhang Haitao, et al. Micro-mechanical Properties of Macro-mechanical Response of Semi-solid Materials[J]. Special Casting & Nonferrous Alloys, 2009,29(8):706-708.
[1]余小鲁,王仲珏,张海涛,朱协彬.半固态材料宏观力学响应的细观力学研究[J].特种铸造及有色合金,2009,29(08):706-708+681. DOI：

Yu Xiaolu, Wang Zhongjüe, Zhang Haitao, et al. Micro-mechanical Properties of Macro-mechanical Response of Semi-solid Materials[J]. Special Casting & Nonferrous Alloys, 2009,29(8):706-708. DOI：

摘要

通过研究半固态材料的细观几何特征

获得其特征参数的统计规律

并以半固态Al-4Cu-Mg合金为例

建立其加热温度为540℃时的具有统计意义的细观特征模型。固相颗粒等效为正方颗粒

等效直径为30、50、70、90μm的固相颗粒个数n1、n2、n3和n4分别为9、12、3和1

运用有限元细观力学方法计算了细观特征模型的宏观力学响应

得到的最大流变应力为6.8MPa（试验值为6.5MPa）

变形末段最小流变应力为1.1MPa（试验值为0.7MPa）。计算结果与实际结果吻合。

Abstract

Statistic features of the parameters were obtained by analyzing meso-structure of the semi-solid materials. Meso-structure model exhibiting statistics was established for semi-solid Al-4Cu-Mg alloy with heating at 540℃.Macro-mechanical response of the semi-solid alloy was calculated by the finite element method based on the model. The calculated results show that the rheo-behavior of the semi-solid materials is well in agreement with actual one

meanwhile

the calculated value is accordant with the measured one in the range of error except.