|
|||||
|
|
| AZ91D合金SIMA形变组织与共晶熔化激活能的研究 | |
| 引用本文： | 王武孝,程健杰,蒋百灵,袁森,介万奇.AZ91D合金SIMA形变组织与共晶熔化激活能的研究[J].特种铸造及有色合金,2005,25(4):205-207. |
| 作者姓名： | 王武孝 程健杰 蒋百灵 袁森 介万奇 |
| 作者单位： | 1. 西北工业大学;西安理工大学 2. 西安理工大学 3. 西北工业大学 |
| 基金项目： | 陕西省教育厅资助项目，陕西省西安市科技攻关项目 |
| 摘 要： | 研究了SIMA法制备半固态AZ91D镁合金坯料过程中形变率对形变组织的影响, 并采用DSC技术研究了形变率与共晶熔化激活能的关系.结果表明:随着形变率的增大,合金的原始组织由树枝晶演变为碎块晶,晶粒内存在位错、孪晶缺陷;合金的共晶熔化激活能随形变率的增大而变小,当形变率达到40%时,共晶熔化激活能下降很少;共晶熔化开始温度随形变率的增大略有下降. |
| 关 键 词： | 镁合金 应变诱发熔化激活法(SIMA) 形变率 共晶熔化激活能 形变组织 |
| 文章编号： | 1001-2249(2005)04-0205-03 |
| 修稿时间： | 2005年2月13日 |
Deformed Microstructure and the Eutectic Melting Activity En-ergy of AZ91D Magnesium Alloy by SIMA Method |
|
| Wang Wuxiao,Chen Jianjie,Jiang Bailing,Yuan Sen,Jie Wanqi.Deformed Microstructure and the Eutectic Melting Activity En-ergy of AZ91D Magnesium Alloy by SIMA Method[J].Special Casting & Nonferrous Alloys,2005,25(4):205-207. | |
| Authors: | Wang Wuxiao Chen Jianjie Jiang Bailing Yuan Sen Jie Wanqi |
| Abstract: | The effect of deformation rate on deformed microstructure of AZ91D magnesium alloy by the SIMA method was researched and differential scanning calorimetry (DSC) was employed to investigate the relation of deformation rate and eutectic melting activity energy.The results show that with the increase of deformation rate,the initial microstructure of the alloy changes from dendrites to fragmentary grains,in which there are twin crystals and dislocations,meanwhile the eutectic melting activity energy of the alloy decreases gradually.When the deformation rate is 40%,the eutectic melting activity energy is slightly decreases.The melting point of eutectic decreases slightly with the increase of deformation rate. |
| Keywords: | DSC |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |