Cyclic deformation and cracking behavior of 316LN stainless steel under thermomechanical and isothermal fatigue loadings

Li, Bingbing; Zheng, Yiming; Shi, Shouwen; Zhang, Zhe; Chen, Xu

doi:10.1016/j.msea.2019.138866

Cited by 38 publications

(21 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cyclic stress response of austenitic SS base metal 22,25,33,35–41 generally consists of pronounced cyclic hardening and saturation stages, often showing brief periods of softening and secondary hardening. Weld joint on the other hand shows a brief hardening followed by a region of predominantly cyclic softening 6,14–17,23,51 .…”

Section: Discussionmentioning

confidence: 99%

“…The strain versus fatigue life plots for a Type 316 LN SS WJ under IF and TMF conditions are presented in Figure 6. The effect of inhomogeneity in deformation and a strong interaction between the creep, oxidation, and DSA during IP TMF cycling led to a drastic reduction in fatigue life for 316 LN SS base metal 32,33,35–37 . The transformation of meta‐stable δ‐ferrite into carbides and intermetallic σ or χ or laves phases in the austenitic SS weld metal is an important degradation mechanism at high temperature, depending on the time of exposure and chemical composition 7–11 .…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

New insights into thermomechanical fatigue behavior of AISI Type 316 LN SS weld joint

Telagathoti

Nagesha

Ramamurthy

2021

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Cyclic deformation and fracture behavior of a type 316 LN austenitic stainless steel (SS) weld joint (WJ) were investigated under thermomechanical fatigue (TMF) and isothermal low cycle fatigue (IF) cycling at the maximum temperature (Tmax) of TMF. A higher cyclic stress response (CSR) and reduced cyclic softening were observed under TMF compared with IF tests. In‐phase (IP) TMF resulted in lower lives compared with IF cycling at the Tmax and out‐of‐phase (OP) TMF, which was attributed to the more pronounced creep‐induced intergranular damage. Characterization of microstructural features and microhardness variations revealed that the accumulation of damage and associated failure depends on the strength and microstructural gradient, together with the deformation incompatibility. The crack propagation is found to depend on the individual and synergistic interactions of the microstructural transformations, creep, and oxidation, depending on the type of fatigue cycle (IF and IP/OP TMF), strain amplitude, and thermal cycling effects.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

New insights into thermomechanical fatigue behavior of AISI Type 316 LN SS weld joint

Telagathoti

Nagesha

Ramamurthy

2021

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…Usually, these types of equipment are often subjected to cyclic loading in service. Thus, cyclic deformation and fatigue properties of stainless steels need to be considered [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Ratcheting-Fatigue Behavior of Harmonic-Structure-Designed SUS316L Stainless Steel

Yang

Zhang

et al. 2021

Metals

Self Cite

View full text Add to dashboard Cite

Stainless steels with harmonic-structure design have a great balance of high strength and high ductility. Therefore, it is imperative to investigate their fatigue properties for engineering applications. In the present work, the harmonic-structured SUS316L stainless steels were fabricated by mechanical milling (MM) and subsequent hot isostatic pressing (HIP) process. A series of ratcheting-fatigue tests were performed on the harmonic-structured SUS316L steels under stress-control mode at room temperature. Effects of grain structure and stress-loading conditions on ratcheting behavior and fatigue life were investigated. Results showed that grain size and applied mean stress had a significant influence on ratcheting-strain accumulation and fatigue life. Owing to the ultrafine grained structure, tensile strength of the harmonic-structured SUS316L steels could be enhanced, which restrained the ratcheting-strain accumulation, resulting in a prolonged fatigue life. A higher mean stress caused a faster ratcheting-strain accumulation, which led to the deterioration of fatigue life. Moreover, a modified model based on Smith–Watson–Topper (SWT) criterion predicted the ratcheting-fatigue life of the harmonic-structured SUS316L steels well. Most of the fatigue-life points were located in the 5 times error band.

show abstract

“…The most severe loading conditions are those where stress or strain and temperature vary simultaneously, that is, in the case of thermomechanical fatigue. Numbers of thermomechanical studies were devoted to superalloy single and polycrystals 5–13 and to austenitic, low alloyed ferritic and dual hardening steels 14–28 …”

Section: Introductionmentioning

confidence: 99%

“…Numbers of thermomechanical studies were devoted to superalloy single and polycrystals [5][6][7][8][9][10][11][12][13] and to austenitic, low alloyed ferritic and dual hardening steels. [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] From the newly developed austenitic steels, the highest interest was devoted to advanced austenitic stainless steels such as NF709, H3RC and Sanicro 25. Originally, the creep resistance was investigated.…”

Section: Introductionmentioning

confidence: 99%

The effect of dwell on thermomechanical fatigue in superaustenitic steel Sanicro 25

Petráš

Šulák

Polák

2020

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

Superaustenitic steel Sanicro 25 has been subjected to out‐of‐phase thermomechanical fatigue cycles with 10‐min dwell at peak temperature in the temperature range from 250°C to 700°C. The effect of the dwells on the cyclic response, internal structure and damage mechanism was studied. Cyclic hardening/softening curves, cyclic stress–strain curves and fatigue life curves were evaluated. The internal structure and nanoparticles representing the obstacles for dislocation motion were analysed and identified by energy dispersive X‐ray spectroscopy in scanning transmission electron microscope. Scanning electron microscopy combined with focused ion beam and electron backscatter diffraction was adopted to reveal the respective mechanisms responsible for fatigue crack nucleation and propagation. Effect of dwells in in‐phase and in out‐of‐phase cycling on the fatigue behaviour, on the modification of internal structure and damage mechanisms, were analysed and discussed.

show abstract

Cyclic deformation and cracking behavior of 316LN stainless steel under thermomechanical and isothermal fatigue loadings

Cited by 38 publications

References 42 publications

New insights into thermomechanical fatigue behavior of AISI Type 316 LN SS weld joint

New insights into thermomechanical fatigue behavior of AISI Type 316 LN SS weld joint

Ratcheting-Fatigue Behavior of Harmonic-Structure-Designed SUS316L Stainless Steel

The effect of dwell on thermomechanical fatigue in superaustenitic steel Sanicro 25

Contact Info

Product

Resources

About