α2 phase precipitation behavior and tensile properties at room temperature and 650 °C in an (α + β) titanium alloy

Author(s):  
Wen-Jing Zhang ◽  
Xiao-Yun Song ◽  
Song-Xiao Hui ◽  
Wen-Jun Ye ◽  
Yang Yu ◽  
...  
2010 ◽  
Vol 97-101 ◽  
pp. 153-157
Author(s):  
Tao Wang ◽  
Hong Zhen Guo ◽  
Jian Hua Zhang ◽  
Ze Kun Yao

The microstructures and room temperature and 600°C tensile properties of Ti-5.8Al-4.0Sn-4.0Zr-0.7Nb -0.4Si-1.5Ta alloy after isothermal forging have been studied. The forging temperature range was from 850°C to 1075°C, and the constant strain rate of 8×10-3/S-1 was adopted. With the increase of forging temperature, the volume fraction of primary α phase decreased and the lamellar α phase became thicker when the temperatures were in range of 850°C -1040°C; The grain size became uneven and the α phase had different forms when the forging temperature was 1040°C and 1075°C respectively; The tensile strength was not sensitive to the temperature and the most difference was within 20MPa. Tensile strength and yield strength attained to the maximum when temperature was 1020°C; the ductility decreased with the increase of forging temperature, and this trend became more obvious if forging temperature was above the β-transus temperature.


2015 ◽  
Vol 637 ◽  
pp. 1-4 ◽  
Author(s):  
Jinwen Lu ◽  
Yongqing Zhao ◽  
Peng Ge ◽  
Yusheng Zhang ◽  
Hongzhi Niu ◽  
...  

2020 ◽  
Vol 321 ◽  
pp. 11073
Author(s):  
Takashi KONNO ◽  
Keitaro TAMURA ◽  
Yoshio ITSUMI ◽  
Kohei YOKOCHI ◽  
Koichi AKAZAWA ◽  
...  

Development of a titanium alloy having excellent hot forgeability and machinability while having the same properties as Ti-64 alloy is effective in reducing the total cost of titanium parts. To develop a new alpha-beta type titanium alloy which has good hot forgeability, machinability and tensile properties equivalent to those of Ti-64 alloy at room temperature, Ti-4.5Al-2.5Cr-1.2Fe-0.1C-nCu-nNi (n=0 to 2) were prepared and evaluated. The new alloy showed tensile properties equivalent to that of Ti-64 alloy at room temperature. On the other hand, the hot deformation stress of new alloy was about 30% lower than that of Ti-64 alloy, and the excellent deformability was confirmed. The addition of Cu and Ni to Ti-4.5Al-2.5Cr-1.2Fe-0.1C alloy suppressed the amount of wear of tool and improved the machinability. Tool life of new alloy machining is extended by about 1.5 times compared to that of Ti-64 alloy. Addition of Cu and Ni is considered to reduce the reactivity between tool and workpiece and improve machinability.


2018 ◽  
Vol 718 ◽  
pp. 287-291 ◽  
Author(s):  
P.L. Narayana ◽  
Seong-Woong Kim ◽  
Jae-Keun Hong ◽  
N.S. Reddy ◽  
Jong-Taek Yeom

Rare Metals ◽  
2015 ◽  
Vol 37 (12) ◽  
pp. 1064-1069 ◽  
Author(s):  
Wen-Jing Zhang ◽  
Xiao-Yun Song ◽  
Song-Xiao Hui ◽  
Wen-Jun Ye ◽  
Wei-Qi Wang

2016 ◽  
Vol 258 ◽  
pp. 550-553
Author(s):  
Héloise Vigié ◽  
Aurélie Soula ◽  
Bernard Viguier

Ti-β21S is a β-metastable titanium alloy, currently used in industries such as aeronautics, because of its cold formability, good mechanical properties at elevated temperature, low density and its strong resistance to oxidation. This alloy is hardened by an α-phase precipitation in the β-matrix. The purpose of the present research is to establish the effect of aging on the microstructure and mechanical properties of Ti-β21S. Different thermal aging tests have been carried out at 600°C and at 650°C for 500 hours in laboratory air. The evolution of the microstructure has been reported after each thermal treatment and associated with room temperature tensile tests results.


Alloy Digest ◽  
1969 ◽  
Vol 18 (10) ◽  

Abstract Magnesium ZK61A is a heat treatable sand casting alloy offering higher strength properties for room-temperature applications than other magnesium casting alloys. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Mg-67. Producer or source: The Dow Chemical Company.


Alloy Digest ◽  
1968 ◽  
Vol 17 (2) ◽  

Abstract Titanium IA1-8V-5Fe is an all beta type titanium alloy recommended for high temperature fasteners. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ti-55. Producer or source: Reactive Metals Corporation.


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