Effect of Annealing Temperatures on Microstructure and Mechanical Properties of Laser Melting Deposited TA15 Titanium Alloy

被引：0

作者：

Xie Xuxia ^{[1
]}

Zhang Shuquan ^{[1
]}

Tang Haibo ^{[1
]}

Li An ^{[1
]}

Fang Yanli ^{[1
]}

Li Peng ^{[1
]}

Wang Huaming ^{[1
]}

机构：

[1] Beihang Univ, Lab Laser Mat Proc Mfg & Forming, Beijing 100083, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2008年 / 37卷 / 09期

关键词：

TA15 titanium alloy; laser melting deposition; heat treatment; microstructure; mechanical properties;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TA15 bars and plates were fabricated by laser melting deposition manufacturing. The effect of annealing temperature on microstructure, and mechanical properties of laser melting deposited TA15 alloy has been studied. The experimental results show beta grains of the alloy has excellent high temperature stability. The microstructure of the as-deposited alloy is the typical lamellar transformed beta. A special bi-modal structure with regular stripe-shaped primary alpha is produced by annealing in the upper alpha+beta field, and volume fraction of the primary alpha decreases with the increasing annealing temperature. The microstructure of beta annealing is fine lamellar transformed beta. The ultimate tensile strength of the plates declines because of the coarsening of primary alpha in alpha+beta field. The ultimate tensile strength and elongation are improved after annealing at 940 degrees C. The ultimate tensile strength is unchanged but the elongation is a bit worse after beta annealing.

引用

页码：1510 / 1515

页数：6

共 12 条

[1] Abbott DH, 1998, ADV MATER PROCESS, V153, P29
[2] [曹京霞 Cao Jingxia], 2004, [稀有金属, Chinese Journal of Rare Metals], V28, P362
[3] The effect of annealing temperatures and cooling rates on microstructure and mechanical properties of investment cast Ti-6Al-4V alloy
Jovanovic, MT
Tadic, S
Zec, S
Miskovic, Z
Bobic, I
[J]. MATERIALS & DESIGN, 2006, 27 (03) : 192 - 199
[4] Leyens C, 2005, TITANIUM TITANIUM AL, P15
[5] [沙爱学 Sha Aixue], 2006, [稀有金属, Chinese Journal of Rare Metals], V30, P26
[6] SHA Aixue, 2003, CHINESE J RARE METAL, V27, P213
[7] Instability mechanisms in lamellar microstructures
Sharma, G
Ramanujan, RV
Tiwari, GP
[J]. ACTA MATERIALIA, 2000, 48 (04) : 875 - 889
[8] [王华明 Wang Huaming], 2004, [世界科技研究与发展, World Sci-Tech R and D], V26, P27
[9] WANG JY, 2008, AERONAUTICAL TITANIU, P201
[10] Yao ZK, 2000, RARE METAL MAT ENG, V29, P340

← 1 2 →