Analysis of the Creep Behavior of P92 Steel Welded Joint

An, Jingkun; Jing, Hongyang; Xiao, Guangchun; Zhao, Lei; Xu, Lianyong

doi:10.1007/s11665-010-9779-x

Cited by 17 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At high temperature, the creep performance, fracture mechanisms and tensile deformation behavior of P92 steel have been well understood . An et al analyzed the creep behavior of different regions in P92 steel welded joint, results showed that fine‐grained heat‐affected zone had the highest creep strain rate. In addition, the influence of temperature and strain rate on tensile deformation and fracture of P92 steel were investigated by Choudhary et al In order to better understand the mechanical and microstructural stability of P92 steel under uniaxial tension, Giroux et al studied the phenomena of necking, damage, and grain size evolution.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Low Cycle Fatigue Performance of New Ferritic P92 Steel at High Temperature: Effect of Strain Amplitude

Wang

Gong

Zhao

et al. 2015

steel research int.

View full text Add to dashboard Cite

Low cycle fatigue (LCF) tests were performed at various strain amplitudes ranging from 0.2 to 0.8% to investigate the effects of strain amplitude on cyclic softening behavior and LCF lifetime of new ferrtic P92 steel. LCF tests were conducted under strain controlled in fully reversed manner with strain rate of 1.0 Â 10 À3 s À1 at high temperature of 650 8C. A novel fatigue life end criterion was adopted in this analysis. The effects of strain amplitude on the cyclic softening behavior, the evolution of plastic strain amplitude, hysteresis loop area and the fatigue life were discussed. Similar softening curves were achieved except for the strain amplitude of 0.2%. The evolution of hysteresis loop areas at the smaller strain range amplitude (less than 0.4%) is contrary to the larger ones. A modified life prediction model was proposed based on Coffin-Manson model and energy-based model, comparison of predicted lifetime and experimental data shows that the model gives a good estimation. In order to better understand the basic stress-strain behavior, time-independent cyclic plasticity model was used to represent the cyclic mechanical behavior of this steel. Comparison of the simulated and experimental results shows that the proposed model can give a reasonable prediction of stress-strain hysteresis loop for P92 steel at high temperature.

show abstract

Section: Introductionmentioning

confidence: 99%

Characterization of Low Cycle Fatigue Performance of New Ferritic P92 Steel at High Temperature: Effect of Strain Amplitude

Wang

Gong

Zhao

et al. 2015

steel research int.

View full text Add to dashboard Cite

show abstract

“…Though these modifications helped extend the life of weldment, they did not provide a permanent solution to this kind of a technically challenging problem. Several failures were reported to occur at the weld joint interfaces made with Ni-based filler materials [17][18][19][20]. Unfortunately, selection of a nickel-base filler material may not provide a fully satisfactory solution if the CTE difference between the two base metals is very significant or when the service conditions are demanding.…”

Section: Introductionmentioning

confidence: 99%

Creep behavior of dissimilar metal weld joints between P91 and AISI 304

Akram

Kalvala

Misra

et al. 2017

Materials Science and Engineering: A

View full text Add to dashboard Cite

Dissimilar welds between ferritic creep-resistant steels and austenitic stainless steels in power plant service are known to fail prematurely due to a large difference in their thermal coefficient of expansion. To address this problem, in the current work, modified 9Cr-1Mo steel (P91) and austenitic stainless steel (AISI 304) transition joints were produced using friction welding employing three interlayers: Inconel 625, Inconel 600, and Inconel 800H. These interlayers were friction welded one over another on P91 alloy, which was finally friction welded to AISI 304. The joints produced with single and three interlayers were subjected to creep rupture tests at different temperatures and stress levels. The creep test results demonstrated that the proposed approach can help realize striking improvements in creep performance of P91/AISI 304 dissimilar metal welds. Further, analysis of creep resulted in a stress exponent (n) of 3 by incorporating the concept of threshold stress which suggested the creep deformation mechanism to be viscous glide due to solute drag. Creep rupture data was also analyzed using Monkman-Grant relationship and creep damage tolerance factor (λ). Results indicated that the damage mechanism is due to cavity growth by the combined effect of power law and diffusion creep.

show abstract

“…Involvement of environment corrosion, time-dependent creep, and the complex interactions between them makes precise lifetime prediction quite difficult. [24][25][26][27] However, this method has not been adopted in the investigation of welded joint's cyclic behaviour. [11][12][13][14][15] It is worth mentioning that Zhu 12 18 have done some systematic investigations, which are of high value to understand the microstructure evolution during LCF and CFI loadings.…”

Section: Introductionmentioning

confidence: 99%

“…A similar approach was used for magnesium welded joints by Karakas et al 22,23 Additionally, creep damage of ferritic steel welded joints has been investigated a lot by using this method. [24][25][26][27] However, this method has not been adopted in the investigation of welded joint's cyclic behaviour.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical characterization of low cycle fatigue and creep fatigue behaviour of P92 steel welded joint

Wang

Zhang

Gong

et al. 2017

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Low cycle fatigue (LCF) and creep fatigue interaction (CFI) behaviour of P92 steel welded joint were investigated experimentally and numerically. Strain‐controlled LCF tests at different strain amplitudes and CFI tests at different peak strain holding time were conducted. Evolutions of cyclic stress response, mean stress, and creep strain during cycling were described, in which the influence of strain amplitude and holding time were investigated. A specific heat treatment process was proposed to get the homogenous simulated material of fine grain region and coarse grain region in the heat affected zone. Material parameters of parent material, fine grain heat affected zone, coarse grain heat affected zone, and weld metal in the unified viscoplasticity model were then determined and validated. To predict the LCF and CFI behaviour of welded joint, 3‐dimensional unified viscoplasticity model with a modified isotropic variable was compiled into ABAQUS UMAT. The comparison between the predicted and experimental result under LCF and CFI loadings showed that the simulation results were reasonable and agreed with the experimental data well.

show abstract

Analysis of the Creep Behavior of P92 Steel Welded Joint

Cited by 17 publications

References 17 publications

Characterization of Low Cycle Fatigue Performance of New Ferritic P92 Steel at High Temperature: Effect of Strain Amplitude

Characterization of Low Cycle Fatigue Performance of New Ferritic P92 Steel at High Temperature: Effect of Strain Amplitude

Creep behavior of dissimilar metal weld joints between P91 and AISI 304

Experimental and numerical characterization of low cycle fatigue and creep fatigue behaviour of P92 steel welded joint

Contact Info

Product

Resources

About