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요약정보
Nd对压铸AZ91D合金组织与性能的影响 / Effect of Nd on Microstructure and Properties of Die Casting AZ91D Alloy
Resource Type
Academic Journal
Authors
雷宇
;
黄正华
;
张忠明
;
徐春杰
;
赵虎
;
康跃华
;
徐涛
;
杨晓炜
;
李卫荣
;
LEI Yu
;
HUANG Zheng-hua
;
ZHANG Zhong-ming
;
XU Chun-jie
;
ZHAO Hu
;
KANG Yue-hua
;
XU Tao
;
YANG Xiao-wei
;
LI Wei-rong
Source
铸造 / Foundry
. 70(3):291-296
Subject
压铸态AZ91D合金
稀土Nd
微观组织
力学性能
导热性能
流动性能
Language
Chinese
ISSN
1001-4977
Online Access
Scopus
Find it @ DONGA
초록
传统压铸获得AZ91D和AZ91D-1.11Nd两种合金试样,采用光学金相显微镜、扫描电子显微镜和X射线衍射仪分析了压铸态微观组织和相组成,并测试了其拉伸力学性能、硬度、导热性能和流动性能.结果 表明,在AZ91D合金中添加1.11%Nd后,压铸态晶粒有所细化,形成较多弥散分布的细小颗粒状Al2Nd和少量针状Al11Nd3,原有的半连续网状分布的β-Mg17Al12数量有所减少.压铸态AZ91D-1.11Nd合金呈现良好的综合性能,室温抗拉强度、伸长率和热导率分别为272 MPa、12.0%和69.5 W/(m·K),与AZ91D合金相比分别提高14%、100%和14%;同时呈现与AZ91D合金相当的优异铸造工艺性能,流动长度达到1 161 mm.
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