Hot deformation behavior and constitutive model of TC18 alloy during compression

Rare Metals ◽  
2014 ◽  
Vol 33 (4) ◽  
pp. 383-389 ◽  
Author(s):  
Bao-Hua Jia ◽  
Wei-Dong Song ◽  
Hui-Ping Tang ◽  
Zhi-Hua Wang ◽  
Xiao-Nan Mao ◽  
...  
Keyword(s):  
Constitutive Model ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Deformation Behavior

Study of Hot Deformation Behavior Using Phenomenological Based Constitutive Model for Austenitic Stainless Steel 316

2018 ◽  
Vol 5 (2) ◽  
pp. 4870-4877
Author(s):  
Nitin Kotkunde ◽  
Hansoge Nitin Krishnamurthy ◽  
Amit Kumar Gupta ◽  
Swadesh Kumar Singh
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Constitutive Model ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Hot Deformation Behavior ◽  
Stainless Steel 316

Hot Deformation Behavior and Constitutive Modeling of Alloy 800H Considering Effectsof Strain

2017 ◽  
Vol 36 (5) ◽  
pp. 467-475
Author(s):  
Rui Luo ◽  
Qi Zheng ◽  
Zhending Tang ◽  
Yongquan Yao ◽  
Guifang Xu ◽  
...  
Keyword(s):  
Flow Stress ◽  
Constitutive Model ◽  
Hot Deformation ◽  
Deformation Behavior ◽  
Testing Machine ◽  
Experimental Result ◽  
Strain Rates ◽  
Hot Deformation Behavior ◽  
Alloy 800H ◽  
Strain Dependent

AbstractHigh-temperature single-pass compression experiments were conducted on alloy 800H using a Gleeble 3500 thermal-mechanical simulation testing machine, and hot deformation behaviors at temperatures of 1,000–1,150 °C and strain rates of 0.01–1 s–1 were investigated. The results revealed that dynamic recrystallization (DRX) behavior occurred more easily under deformation conditions with relatively low strain rates and high deformation temperatures. By taking the influence of strain on the hot deformation behavior into consideration, a strain-dependent hyperbolic sine constitutive model was constructed. Based on this revised constitutive model, flow stress during deformation was predicted. The linear relation between the predicted value and the experimental result was as high as 0.99648, and the absolute average relative error was 2.019 %. Thus, it was demonstrated that the strain-dependent analysis provided a constitutive model that was able to precisely predict flow stress under experimental conditions.

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