scholarly journals Characterization of Microstructure and Mechanical Properties of Ti-6Al-4V Alloy after Cyclic Heat Treatment

2021 ◽  
Vol 27 (1) ◽  
pp. 27-31
Author(s):  
Zhixiong ZHANG ◽  
Ruirui WU ◽  
Jie HOU ◽  
Tao WANG
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Lamellar Structure ◽  
Lamellar Microstructure ◽  
Annealing Treatment ◽  
Cost Effective ◽  
Cyclic Heat Treatment ◽  
Cost Effective Approach ◽  
Cyclic Heat

A cost-effective approach which consists of cyclic heat treatment (CHT) and annealing is used to refine the coarse lamellar structure of as-cast Ti-6Al-4V alloy. The coarse lamellar microstructure was significantly refined after the CHT process, α lamellae were broken up while the original orientations of α lamellae were maintained. After annealing treatment, a basketweave microstructure was achieved in Ti-6Al-4V alloy, and the formation of globular α grains was observed. The microstructure refinement mechanisms during CHT and annealing are mainly considered to be break-up of lamellar structure and static recrystallization. The room temperature mechanical properties of Ti-6Al-4V alloy were significantly improved. The microhardness of Ti-6Al-4V alloy increased from 306 HV to 402 HV. The values of yield strength (YS) and ultimate tensile strength (UTS) increased from 734 MPa and 740 MPa to 911 MPa and 1010 MPa, respectively. The value of ductility increased from 1.1 % to 3.3 %.

Effect of cyclic heat treatment and swaging on mechanical properties of the tungsten heavy alloys

2016 ◽  
Vol 656 ◽  
pp. 256-265 ◽  
Author(s):  
U. Ravi Kiran ◽  
Jalaj Kumar ◽  
Vikas Kumar ◽  
M. Sankaranarayana ◽  
G.V.S. Nageswara Rao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Cyclic Heat Treatment ◽  
Heavy Alloys ◽  
Tungsten Heavy Alloys ◽  
Cyclic Heat

scholarly journals Microstructure and Mechanical Properties of Ti-5Al-2.5Fe Alloy Produced by Powder Forging

2018 ◽  
Vol 770 ◽  
pp. 39-44 ◽  
Author(s):  
Ming Tu Jia ◽  
Clément Blanchard ◽  
Leandro Bolzoni
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Tensile Strength ◽  
Aging Treatment ◽  
Cost Effective ◽  
Vacuum Sintering ◽  
Forging Process ◽  
Blended Elemental ◽  
Cost Effective Approach ◽  
Near Net Shape

Blended elemental powder metallurgy is a cost effective approach to produce near net shape titanium alloy parts; however, the residual pores remaining in sintered parts are detrimental to the mechanical properties. In this study, elemental powders (Ti, Al and Fe) were used to produce the Ti-5Al-2Fe alloy by a powder forging process, involving cold compaction, vacuum sintering, forging and heat treatment. The residual pores of the sintered parts were removed completely by forging at the temperature of 1250oC. The effect of solution and aging and mill annealing heat treatments on the mechanical properties of the forged Ti-5Al-2Fe parts were studied. It is found that the ductility of the forged Ti-5Al-2Fe parts is improved significantly by both solution and aging treatment and mill annealing, without decreasing their ultimate tensile strength, which sits around 1000 MPa. The enhancement of the mechanical behaviour is justified via understanding the evolution of the residual porosity and of the microstructural features of the materials.

Effect of cyclic heat treatment on the mechanical properties of filled polyethylene

1979 ◽  
Vol 14 (6) ◽  
pp. 679-682
Author(s):  
V. I. Grigor'ev ◽  
V. P. Gordienko ◽  
N. G. Kalinin ◽  
Ya. M. Spas ◽  
A. N. Tynnyi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Cyclic Heat Treatment ◽  
Cyclic Heat
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