Improvement of microstructure homogenous and tensile properties of powder hot isostatic pressed TA15 titanium alloy via heat treatment

2021 ◽  
pp. 131585
Author(s):  
Yichao Wang ◽  
Xiangyi Xue ◽  
Hongchao Kou ◽  
Jiaxin Chang ◽  
Zhongwei Yin ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Titanium Alloy ◽  
Tensile Properties ◽  
Ta15 Titanium Alloy

Effect of Hot Processing on Mircrostructure and Properties of Flat Billets of TA15 Titanium Alloy

2021 ◽  
Vol 1016 ◽  
pp. 906-910
Author(s):  
Xin Hua Min ◽  
Cheng Jin
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Titanium Alloy ◽  
High Temperature ◽  
Room Temperature ◽  
High Strength ◽  
Slow Cooling ◽  
Microstructure And Mechanical Properties ◽  
Ta15 Titanium Alloy ◽  
The Ideal

In this paper,effect of the different forging processes on the microstructure and mechanical properties of the flat flat billets of TA15 titanium alloy was investigated.The flat billiets of 80 mm×150 mm×L sizes of TA15 titanium alloy are produced by four different forging processes.Then the different microstrure and properties of the flat billiets were obtained by heat treatment of 800 °C~850 °C×1 h~4h.The results show that, adopting the first forging temperature at T1 °C、slow cooling and the second forging temperature at T2°C 、quick cooling, the primary αphases content is just 10%, and there are lots of thin aciculate phases on the base. This microstructure has both high strength at room temperature and high temperature, while the properties between the cross and lengthwise directions are just the same. So the hot processing of the first forging temperature at T1 °C、slow cooling and the second forging temperature at T2°C 、quick cooling is choosed as the ideal processing for production of aircraft frame parts.

Influence of aging heat treatment on microstructure and tensile properties of laser oscillating welded TB8 titanium alloy joints

2020 ◽  
Vol 797 ◽  
pp. 140083
Author(s):  
Zhenglong Lei ◽  
Yuan Chen ◽  
Shengchong Ma ◽  
Heng Zhou ◽  
Jingtao Liu ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Titanium Alloy ◽  
Tensile Properties ◽  
Aging Heat Treatment

Investigation on the Microstructures and Tensile Properties of TA15 Titanium Alloy Thick-Wall Parts Formed by Laser Rapid Forming Process

2013 ◽  
Vol 650 ◽  
pp. 7-11
Author(s):  
Ming Zhe Xi
Keyword(s):  
Titanium Alloy ◽  
Tensile Properties ◽  
Alpha Phase ◽  
Thick Wall ◽  
Forming Process ◽  
Scanning Velocity ◽  
Heat Treated ◽  
Ta15 Titanium Alloy ◽  
Overlap Method ◽  
Laser Rapid Forming

TA15 titanium alloy thick-wall parts have been deposited by Laser rapid forming (LRF) process. In this paper, a new overlap method between two adjacent laser tracks has been used to deposit the thick-wall titanium part. Results showed that the LRFed thick-wall titanium part was good in shape by using the new overlap method. The microstructure of the LRFed titanium alloy primarily consists of columnar prior-beta grain, which is perpendicular to the substrate resulting from directionally solidification. It also could be observed that the size of alpha phase increased with increasing laser power and decreasing scanning velocity. Tensile properties of LRFed titanium was slightly lower than that of the wrought annealed TA15 titanium alloy, after the heat-treatment of 940°C/1h/AC, the heat-treated titanium alloy showed good tensile properties which were equivalent to that of the wrought annealed TA15 titanium alloy.

Effect of Annealing Process on Microstructure and Tensile Properties of TC16 Titanium Alloy after Rapid Heat Treatment

2021 ◽  
Vol 1032 ◽  
pp. 152-156
Author(s):  
Peng Lei ◽  
Shu Cheng Dong ◽  
Guang Yu Ma ◽  
Tuo Cheng ◽  
O.M. Ivasishin
Keyword(s):  
Heat Treatment ◽  
Titanium Alloy ◽  
Tensile Properties ◽  
High Strength ◽  
Optical Microscope ◽  
Annealing Process ◽  
Test Machine ◽  
Two Phase ◽  
Reduction Of Area ◽  
Rapid Heat Treatment

TC16 titanium alloy is a martensite α+β two-phase high strength titanium alloy, which can improve its structure and enhance properties through heat treatment. Effect of annealing process on microstructure and tensile properties of TC16 titanium alloy was investigated using optical microscope, scanning electron microscope and universe tensile test machine. The results show that when annealed at 720°C for 4h then furnace cooling to ambient temperature, the tensile strength of the TC16 alloy reaches nearly 900MPa,the elongation reaches 19.6% and the reduction of area reaches 65%, which present a good comprehensive performance.

Modeling of Phase Transformation for TA15 Titanium Alloy During Heat Treatment

2013 ◽  
Vol 706-708 ◽  
pp. 148-151
Author(s):  
Hui Jun Zhao ◽  
Bao Yu Wang ◽  
Jian Guo Lin ◽  
Lei Yang
Keyword(s):  
Heat Treatment ◽  
Titanium Alloy ◽  
Phase Transformation ◽  
Evolutionary Programming ◽  
Optimization Method ◽  
Transformation Model ◽  
Test Results ◽  
Material Parameters ◽  
Ta15 Titanium Alloy ◽  
Different Temperatures

In this paper a phase transformation model with the temperature has been used to predict the percentage of phase at different temperature for TA15 titanium alloy during heat treatment. Heat treatment tests were conducted on TA15 samples at different temperatures ranging from 850°C to 1000°C. The material parameters were determined by using the test results and an Evolutionary Programming (EP)-based optimization method. Good agreements between the experimental and computed results were obtained.

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