Effect of the solidification structure on the hardness after T5 heat treatment in Al-10%Si-0.3%Mg alloy die-castings

被引：0

作者：

Yanagihara, Emi ^{[1
]}

Orii, Shin ^{[1
]}

Iketani, Takuya ^{[2
]}

Saikawa, Seiji ^{[3
]}

Matsuda, Kenji ^{[3
]}

Ikeno, Susumu ^{[4
]}

机构：

[1] Ahresty Corporation, 1-2 Nakahra, Mitsuya-cho, Toyohashi-shi, Aichi

[2] Graduate School of Science and Engineering for Education, University of Toyama, Toyama-shi, Toyama

[3] Graduate School of Science and Engineering for Research, University of Toyama, Toyama-shi, Toyama

[4] Hokuriku Polytechnic College, Uozu-shi, Toyama

来源：

Keikinzoku/Journal of Japan Institute of Light Metals | 2015年 / 65卷 / 01期

关键词：

Al-Si-Mg alloy; Casting; High-pressure die-cast; Solidification; T5; treatment;

D O I：

10.2464/jilm.65.15

中图分类号：

学科分类号：

摘要：

The solidification structure and hardness in Al-10%Si-0.3%Mg alloy cast by high-pressure die-casting and gravity die-casting were investigated used by optical microscopy, micro-vickers and ultra-micro hardness measurement. The shape of primary crystallized α-Al phases in high-pressure die-casting was cellular-dendritic and cellular, due to increasing of the number of heterogeneous nucleation and fragmentation of primary α-Al phase by flow into diecavity. The macrostructure of cross section in die-casting consists of five layers; two primary crystallized phases nearby casting surfaces, two segregation bands and one final crystallized phase in center of casting wall. In the case of applying T5 treatment to die-casting, the hardness of primary α-Al phase was increased, but that of eutectic phase was approximately constant. © 2015 The Japan Institute of Light Metals.

引用

页码：15 / 21

页数：6