Influence of solution temperature on eutectic structure and elevated-temperature mechanical properties of super-gravity solidified Al-Cu-Ce alloy

被引：0
|
作者：
Wu, Chuandong [1 ,2 ]
Zhong, Songqiang [1 ]
Shen, Shuai [1 ]
Huang, Weiming [1 ]
Zhang, Penghui [1 ]
Xu, Qi [1 ]
Gan, Zhanghua [1 ,2 ]
Luo, Guoqiang [3 ,4 ]
Liu, Jing [1 ,5 ]
机构：
[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China
[2] Hubei Engn Technol Res Ctr Marine Mat & Serv Safet, Wuhan 430081, Hubei, Peoples R China
[3] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
[4] Chem & Chem Engn Guangdong Lab, Chaozhou Branch, Chaozhou 521000, Peoples R China
[5] Shenzhen Univ, Coll Mat Sci & Engn, Guangdong Prov Key Lab New Energy Mat Serv Safety, Shenzhen 518060, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2025年 / 1011卷
基金：
中国国家自然科学基金;
关键词：
Heat-resistant Al alloy; Precipitation behavior; Eutectic structure; HALL-PETCH RELATION; ALUMINUM-ALLOY; PRECIPITATION KINETICS; GRAIN-REFINEMENT; MG; MICROSTRUCTURE; BEHAVIOR; HEAT; ENERGY; FIELD;
D O I：
10.1016/j.jallcom.2024.178410
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The influence of solution temperature on microstructure and mechanical properties in super-gravity solidified Al-Cu-Ce alloy was investigated. Noted that the formation of eutectic Al8CeCu4 phase is able to affect the precipitation behavior. Both heterogeneous and homogeneous nucleation of the precipitates occur during aging, leading to the formation of disk-like precipitates (Al-Al8CeCu4 interface) and needle-like precipitates (grain interior), which contributed to the significant enhancement(similar to 53 % higher than the super-gravity solidified sample) of tensile strength of 204.1 +/- 3.8 MPa at 300 degrees C. However, micro-cracks initiated preferentially in the vicinity of the eutectic colony boundaries mainly due to the brittleness of the spheroidized Al8CeCu4 phase, leading to a slight decrease in elongation.
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页数：12
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