EFFECT OF DEGASSING AND GRAIN REFINEMENT ON HOT TEARING TENDENCY IN Al8Si3Cu ALLOY

被引：13

作者：

Uludag, Muhammet ^{[1
]}

Cetin, Remzi ^{[2
]}

Dispinar, Derya ^{[3
]}

Tiryakioglu, Murat ^{[4
]}

机构：

[1] Bursa Tech Univ, Met & Mat Engn, Bursa, Turkey

[2] Karatay Univ, Engn Fac, Konya, Turkey

[3] Istanbul Univ, Engn Fac, Istanbul, Turkey

[4] Univ North Florida, Sch Engn, Jacksonville, FL USA

来源：

INTERNATIONAL JOURNAL OF METALCASTING | 2018年 / 12卷 / 03期

关键词：

casting; aluminum alloys; grain refining; simulation; hot tearing; REDUCED PRESSURE TEST; ALUMINUM-ALLOYS; TEMPERATURE; MECHANISMS; BEHAVIOR; CRACKING; TI;

D O I：

10.1007/s40962-017-0197-9

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effect of melt quality on hot tearing susceptibility of Al8Si3Cu alloy was examined under six different conditions, by using a traditional T-shaped mold. Grain refinement was carried out by two different modifiers: AlTi5B1 and Al3B. For each test, samples were cast before and after degassing of melt. Therefore, a new hot tearing tendency index was developed by both bifilm calculations and porosity that occurred in the middle of T-zone of casting parts. Results indicated that hot tearing of cast aluminum alloys was a complex phenomenon, and bifilms play a major role, especially by compensating for shrinkage and consequently contributing to the inconsistencies in results.

引用

页码：589 / 595

页数：7

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