Constitutive Modeling of 17-12 Mo SPH Stainless Steel Behavior at High Temperature

1988 ◽  
Vol 110 (1) ◽  
pp. 51-58 ◽  
Author(s):  
P. Blanchard ◽  
P. Lemoine

A systematic comparison of the detailed behaviors predicted by current constitutive models under various loadings and the actual behavior of austenitic steels under the same lodings was carried out. This comparison leads us to reject these models and to propose a new model whose predictions seem more realistic for these loadings: the unified multilayers model in which the material is represented by a composite of layers of various hardnesses. The details of the model are given in the paper.

2021 ◽  
Author(s):  
Haishen Jia ◽  
Jilin Zhang ◽  
Xiangbin Yi ◽  
Jiancheng Shen ◽  
Linhu Tang ◽  
...  

Abstract The compression test was conducted on 9Cr18Mo stainless steel by using the UTM5305 universal testing machine and the split Hopkinson pressure bar (SHPB) test device. In this way, the stress–strain curves pertaining to quasi-static (strain rate of 0.001 ~ 0.1 s-1) and dynamic (temperature range of 25 ~ 650 ℃ and strain rate of 800 ~ 4,000 s-1) states were attained. According to the stress–strain curves, the rheological behaviours of 9Cr18Mo stainless steel at high temperature and high strain rate were discussed. Based on the test data, the parameters of two constitutive models (Johnson-Cook (J-C) and Power-Law (P-L)) for 9Cr18Mo stainless steel were identified and the correlation coefficients (R) and average absolute relative errors (AAREs) of the two constitutive models were compared. The results showed that 9Cr18Mo stainless steel presents strain-rate sensitivity and significant thermal softening, that is, the flow stress on 9Cr18Mo stainless steel increases with strain rate while significantly reduces with increasing temperature. The R values are 0.9697 and 0.9896 and the AAREs of two constitutive models are 2.77% and 1.85%, respectively. Hence, the P-L constitutive model shows a higher prediction accuracy compared with the J-C constitutive model and can better describe the rheological behaviours of 9Cr18Mo stainless steel at high temperature and high strain rate.


Alloy Digest ◽  
1993 ◽  
Vol 42 (2) ◽  

Abstract WAUKESHA METAL NO. 88 is a corrosion resistant nickel-base alloy compounded to run against stainless steel without galling or seizing. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as casting, heat treating, machining, and joining. Filing Code: Ni-84. Producer or source: Waukesha Foundry Company. Originally published July 1963, revised February 1993.


Alloy Digest ◽  
1957 ◽  
Vol 6 (11) ◽  

Abstract Type HW is a nickel-base alloy containing chromium and iron. It is austenitic, non-magnetic, and has exceptionally high resistance to corrosion, cyclic heating, and oxidation. It is of the 60 Ni-12Cr type alloy. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Ni-37. Producer or source: Stainless steel foundries. Revised as Alloy Digest Ni-449, April 1994.


Alloy Digest ◽  
2013 ◽  
Vol 62 (7) ◽  

Abstract ATI 441 is a low-carbon and low-nitrogen ferritic stainless steel with 18 Cr and columbium. The alloy is typically used for exhaust system components. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming. Filing Code: SS-1150. Producer or source: Allegheny Technologies Inc..


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