scholarly journals Hot workability analysis and processing parameters optimisation for 20CrMnTiH steel by combining processing map with microstructure

2016 ◽  
Vol 45 (4) ◽  
pp. 317-324 ◽  
Author(s):  
W. Feng ◽  
F. Qin ◽  
H. Long
Keyword(s):  
Processing Map ◽  
Processing Parameters ◽  
Hot Workability

Hot Deformation Characterization of Mg-Sm-Zn-Zr Alloy Using Artificial Neural Network and 3D Processing Map

2016 ◽  
Vol 723 ◽  
pp. 252-257
Author(s):  
Ruo Han Chang ◽  
Zhong Yi Cai ◽  
Chao Jie Che
Keyword(s):  
Processing Map ◽  
Processing Parameters ◽  
Maximum Efficiency ◽  
Strain Rates ◽  
Hot Workability ◽  
Compression Tests ◽  
Bp Network ◽  
Wide Range ◽  
3D Processing ◽  
Zr Alloy

The true stress-strain data from isothermal hot compression tests on Gleeble-1500D thermo mechanical simulator, in a wide range of temperatures (350-450°C) and strain rates (0.001-1s-1), was employed to establish the PSO-BP network prediction model and 3D processing map of Mg-Sm-Zn-Zr alloy. It was found that the PSO-BP model could be efficient and accurate in predicting flow stress, most of relative errors were in the range of -4% to 6%, and the average relative error was found to be 1.52%. Then considering the effect of strain, the 3D processing map was established to characterize the hot workability of the alloy. The 3D processing map exhibited the maximum efficiency domain and the instability domain, which could be used to determine the optimal deformation conditions. The optimum processing parameters of Mg-Sm-Zn-Zr alloy were deformation temperatures of 400-450°C and strain rates of 0.003-0.1s-1.

ATI 425

Alloy Digest ◽  
2004 ◽  
Vol 53 (7) ◽  
Keyword(s):  
Fracture Toughness ◽  
Chemical Process ◽  
Aerospace Industry ◽  
Processing Parameters ◽  
Process Industry ◽  
Hot Workability ◽  
Chemical Process Industry ◽  
Armor Plate ◽  
Ballistic Protection ◽  
Hot Rolled

Abstract ATI 425 was originally developed for hot-rolled armor plate to provide ballistic protection comparable to Ti-6Al-4V and has been evaluated against a variety of projectile threats for use as armor. While processing the alloy for armor plate applications, it was observed that the material exhibited very good hot workability, permitting a more lenient window of processing parameters than necessary for Ti-6Al-4V. Versatility then expanded, and applications now exist in the chemical process industry (CPI) and in the aerospace industry. This datasheet provides information on composition, physical properties, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance. Filing Code: TI-133. Producer or source: ATI Wah Chang, Allegheny Technologies. Originally published March 2004, revised July 2004.

Hot workability, constitutive model and processing map of 3Cr23Ni8Mn3N heat resistant steel

Vacuum ◽  
2019 ◽  
Vol 165 ◽  
pp. 324-336 ◽  
Author(s):  
Zhongman Cai ◽  
Hongchao Ji ◽  
Weichi Pei ◽  
Xuefeng Tang ◽  
Xiaomin Huang ◽  
...  
Keyword(s):  
Constitutive Model ◽  
Processing Map ◽  
Resistant Steel ◽  
Hot Workability ◽  
Heat Resistant Steel ◽  
Heat Resistant

Hot Workability Map for Near-α Titanium Alloy Ti-5.6Al-4.8Sn-2Zr-1Mo-0.35Si-0.7Nd

2012 ◽  
Vol 482-484 ◽  
pp. 1453-1456
Author(s):  
Ming Man Li ◽  
Qui Jian Xun ◽  
Shang Zhou Zhang
Keyword(s):  
Titanium Alloy ◽  
Dynamic Recrystallization ◽  
Power Dissipation ◽  
Processing Map ◽  
Flow Instability ◽  
Shear Bands ◽  
Hot Workability ◽  
Adiabatic Shear Bands ◽  
Β Phase ◽  
Power Dissipation Efficiency

The characterizations of hot working behavior of a near-α titanium alloy using the approach of processing maps are described. Processing map in the α+β region exhibit a domain of the globularization process of lamellar structure and α dynamic recrystallization with a power dissipation efficiency of 0.6-0.9. In the β region the map exhibited a domain centered around 1060°C and 0.1 s-1with a power dissipation efficiency of 0.76 where the β phase undergoes dynamic recrystallization. At higher strain rate flow instability occurs in the α+β region due to adiabatic shear bands formation as well as in the β region due to flow inhomogeneity of β phase.

Optimization of the hot workability for an extrude AZ80 Mg alloy using the processing map and Kriging meta-model

2015 ◽  
Vol 16 (6) ◽  
pp. 1149-1156 ◽  
Author(s):  
Sang Kyun Oh ◽  
Kwang Ki Lee ◽  
Young-Sang Na ◽  
Chang Hee Suh ◽  
Yun-Chul Jung ◽  
...  
Keyword(s):  
Processing Map ◽  
Mg Alloy ◽  
Hot Workability ◽  
Meta Model
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