Characteristic Flow Behaviour of γ + γʹ Duplex and Its Significant Applications in Hot Working Process of Superalloys

PEMBENTUKAN MATERIAL (METAL FORMING) HOT WORKING PROCESS DAN COLD WORKING PROCESS

10.31227/osf.io/kfgy6 ◽

2019 ◽

Author(s):

Wahyu Hidayat

Keyword(s):

Metal Forming ◽

Cold Working ◽

Hot Working ◽

Working Process

1.Hot Working Process (Pengerjaan Dalam Kondisi Panas)Pada proses pengerjaan Hot Working Process ini akan terjadi kenaikan tegangan luluh, kenaikan nilai kekerasan material (logam baja), dan penurunan nilai keuletan material.2.Cold Working Process (Pengerjaan Dalam Kondisi Dingin) Proses pembentukan logam secara plastis dengan temperatur pengerjaan di bawah temperatur rekristalisasi.

Download Full-text

Cellular Automaton Simulation and Experimental Observation of the Dynamic Recrystallization of Titanium Alloy TC11 with Varied Strain Rates

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.476-478.71 ◽

2012 ◽

Vol 476-478 ◽

pp. 71-74

Author(s):

Zhi Fu Yang ◽

Qing Yuan Meng ◽

Yu Hang Jing

Keyword(s):

Titanium Alloy ◽

Dislocation Density ◽

Dynamic Recrystallization ◽

Strain Rate ◽

Cellular Automaton ◽

Experimental Observation ◽

Hot Working ◽

Strain Rates ◽

Working Process ◽

Loading Sequence

During the metal hot working process, the dislocation density will vary with strain and strain rate, and the variation of the dislocation density will affect the grain evolution subsequently. The cellular automaton (CA) method is an effective technique used to simulate the grain evolution of materials. In this work, a dynamic recrystallization (DRX) model of titanium alloy TC11 under varied strain rates was established by the use of cellular automaton method and verified by experimental observation. Two types of loading processes called “begin fast and then slowly” and “begin slowly and then fast” were simulated to investigate the titanium alloy TC11 grain evolution processes during hot working. The simulation results are in good coincidence with experimental data. Both cellular automaton simulation and experimental results show that the flow stresses and DRX transformation percentage during hot working process of the TC11 alloy are closely related not only to the strain rate but also to the loading sequence. Compared to the “begin slowly and then fast” loading sequence, the flow stress with the “begin fast and then slowly” loading sequence is relatively smaller under the same strain rates, and the DRX transformation percentage is relatively larger.

Download Full-text

Extruded Products

Extrusion ◽

10.31399/asm.tb.ex2.t69980009 ◽

2006 ◽

pp. 9-58

Author(s):

Günther Sauer

Keyword(s):

Titanium Alloy ◽

Deformation Temperature ◽

Copper Alloy ◽

Iron Alloys ◽

Hot Working ◽

Working Process ◽

Temperature Range ◽

Working Temperature ◽

Extruded Products ◽

Composition Properties

Abstract The hot-working process extrusion is used to produce semifinished products in the form of bar, strip, and solid sections, as well as tubes and hollow sections. The first part of this chapter describes the composition, properties, and applications of tin and lead extruded products with a deformation temperature range of 0 to 300 deg C and magnesium and aluminum extruded products with a working temperature range of 300 to 600 deg C. The second part focuses on copper alloy extruded products, extruded titanium alloy products, and extruded products in iron alloys with a working temperature range of 600 to 1300 deg C.

Download Full-text

Recrystallization behavior of Ti40 burn-resistant titanium alloy during hot working process

International Journal of Minerals Metallurgy and Materials ◽

10.1007/s12613-016-1269-1 ◽

2016 ◽

Vol 23 (5) ◽

pp. 581-587 ◽

Cited By ~ 4

Author(s):

Yun-jin Lai ◽

She-wei Xin ◽

Ping-xiang Zhang ◽

Yong-qing Zhao ◽

Fan-jiao Ma ◽

...

Keyword(s):

Titanium Alloy ◽

Hot Working ◽

Recrystallization Behavior ◽

Working Process

Download Full-text

Quantitative analysis of the effect of α-phase on mechanical property of Ti-6Al-4V alloy during hot working process

International Journal of Modern Physics B ◽

10.1142/s0217979215400123 ◽

2015 ◽

Vol 29 (10n11) ◽

pp. 1540012

Author(s):

Yuanfei Han ◽

Xiaofang Yang ◽

Weidong Zeng ◽

Weijie Lu

Keyword(s):

Mechanical Properties ◽

Mechanical Property ◽

Quantitative Analysis ◽

Aspect Ratio ◽

Volume Fraction ◽

Aging Treatment ◽

Hot Working ◽

Working Process ◽

Height Reduction ◽

Α Phase

In this paper, the morphologic evolution of α-phases and their influence on mechanical properties during the hot working process of the Ti-6Al-4V alloy has been quantitatively investigated. Samples with a variety of different features of α-phase were obtained by hot working. A quantitative analysis of SEM/OM images is carried out to determine the features of α-phase before and after deformation, including the length, thickness, aspect ratio and volume fraction of α-phase. It was found that the α-phase platelet thickness increases with the increasing of forging height reduction on subsequent solution and aging treatment, larger height reduction would reduce the aspect ratio and length of α-phase and further makes the α-phase closest to equiaxed morphology. Moreover, the influence of the α-phase features on the mechanical properties was systematically investigated. The results indicate that the mechanical properties are strongly determined by the features of the α-phase, especially the thickness and volume fraction of the α-phase. This work will optimize the mechanical property by means of microstructural control and deepen the understanding of influence of α-phase features on the mechanical properties.

Download Full-text