Related references
Note: Only part of the references are listed.
Article
Materials Science, Multidisciplinary
Lei Gu et al.
Summary: According to Conside`re necking criterion, increasing the strength of a material will decrease its ductility, even if the strain hardening rate remains the same. Traditional strengthening mechanisms such as grain refinement and deformation reduce ductility while increasing yield strength. Heterostructures have shown potential in reducing ductility loss but still have lower ductility compared to coarse-grained counterparts. In this study, a bulk heterostructured Ti with a uniform multi-modal grain size distribution was fabricated and exhibited high yield strength, ductility, and an outstanding hardening effect. The improvement in ductility was attributed to the presence of maximum interface density and extra strain hardening caused by hetero-deformation induced dislocation pile-ups.
Article
Chemistry, Physical
Q. Wang et al.
Summary: This study compared the low cycle fatigue (LCF) behavior of Ti-6Al-3 Nb-2Zr-1Mo and Ti-6Al-4 V ELI at different strain amplitudes. Ti-6Al-3 Nb-2Zr-1Mo exhibited a slightly longer fatigue life when plastic deformation predominated, while Ti-6Al-4 V ELI showed a shorter fatigue life under elastic deformation predominance. Both materials demonstrated continuous cyclic softening behavior, with the rate of softening correlating with fatigue life. Ti-6Al-3 Nb-2Zr-1Mo had easier activation of prismatic and basal slips and denser, more homogeneous dislocation bands due to its lower aluminum content, resulting in reduced local stress concentration and prolonged fatigue life.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Mechanical
Zilu Xu et al.
Summary: This study comparatively investigated the crack initiation and propagation behavior of Ti-55531 alloy with lamellar and bimodal microstructures under low cycle fatigue. Results showed that the two microstructures exhibited significant differences in cyclic deformation and fatigue behavior due to their different sensitivities to cyclic strain. Additionally, stacking faults were identified as another important mechanism for crack nucleation at the alpha(s)/beta interface of Ti alloys.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Chengyan Bai et al.
Summary: The low cycle fatigue behavior of Ti-6Al-4 V alloy manufactured via electron beam melting (EBM) was studied. The relationship between fatigue property, internal stress and microstructure was established to understand the cyclic-deformation behavior and LCF life of EBM Ti-6Al-4 V alloy. It was found that the LCF life of EBM Ti-6Al-4 V is comparable to the wrought counterparts under low strains and higher than that of selective laser melted Ti-6Al-4 V reported. Tension-compression asymmetry and cyclic softening behavior were observed at different strains, and the anisotropy of tension-compression increased with increasing strain due to the increase of back stress and the decrease of friction stress. The formation of sub-grain boundaries and fragmented beta phase reduced friction stress, resulting in cyclic softening.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Nanoscience & Nanotechnology
Mao-Yuan Luo et al.
Summary: The effect of grain size on the strain-controlled low-cycle fatigue properties of CoCrFeMnNi high-entropy alloys was investigated. It was found that fine-grained alloys exhibited more prominent secondary cyclic hardening behavior compared to coarse-grained alloys. By tuning the grain size, fatigue-resistant high-entropy alloys can be designed.
SCRIPTA MATERIALIA
(2022)
Article
Engineering, Mechanical
Wenbin Guo et al.
Summary: This work systematically investigated the deformation mechanism and cyclic stress response behavior of Zircaloy-4 alloy cladding tube at room temperature. Low cyclic fatigue tests revealed that cyclic softening and hardening strongly depend on the applied strain amplitude, and prismatic < a > slip was the primary cyclic deformation mode when the value of plastic strain amplitude is less than that of elastic strain amplitude.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Xiangkang Zeng et al.
Summary: The short fatigue crack growth behavior of zirconium was quantitatively investigated, and it was found that the cracks mainly propagated transgranularly and were sensitive to the crystallographic orientation. The cracks often deflected at grain boundaries and preferred to propagate along specific slip planes. A method for evaluating crack growth across grain boundaries was proposed.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Materials Science, Multidisciplinary
A. Jeldi et al.
Summary: This study investigates the origin of cyclic hardening, pseudo-plateau response, and cyclic stabilization during strain-controlled pull-push fatigue of Mg-8.2Gd-3.6Y-1.6Zn-0.5Zr alloy at room temperature. The main factors contributing to cyclic hardening at room temperature include dislocation trapping between LPSO lamellas, substructure development, and twinning/rearrangement within twin bands. Pseudo-plateau behavior and cyclic stabilization are attributed to the co-formation of vein structures near 18R LPSO and reversion of 14H LPSO.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
Kaiju Lu et al.
Summary: This study compares the low-cycle fatigue response and deformation mechanisms of a dual-phase Al0.5CoCrFeMnNi high-entropy alloy (HEA) with CoCrFeMnNi HEA. Results show that Al0.5CoCrFeMnNi exhibits higher cyclic stress resistance and comparable cyclic strain resistance at low-to-medium strain amplitudes. The primary deformation mechanism is dislocation slip, which transitions from planar slip to wavy slip with increasing strain amplitude. The enhanced cyclic stress resistance is attributed to precipitation hardening and improved solid solution strengthening. The comparable cyclic strain resistance is due to their similar deformation mode. Furthermore, comparisons with other alloys provide strategies for enhancing fatigue resistance in HEAs.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Mechanical
Wenbin Guo et al.
Summary: This study investigated the low cycle fatigue behavior of Zircaloy-4 alloy cladding tube manufactured by cold Pilger rolling and annealing at room temperature. The results revealed that fatigue cracks initiated from the marked side on the clamped position, namely the outer wall of the tube. Additionally, substantial microstrain and dislocation were found on the outer wall surface of the tube during the manufacturing stage, which played a significant role in the fatigue crack initiation. Moreover, the grain size and texture of the outer wall surface, inner wall surface, and cross section had almost no effect in this regard.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Nanoscience & Nanotechnology
Geonhyeong Kim et al.
Summary: The low-cycle fatigue behavior of a cryogenic-rolled commercially pure titanium alloy was investigated, showing that increasing the volume fraction of deformation twins through pre-deformation significantly improved the low-cycle fatigue resistance. The formation of smaller dislocation cells in the pre-deformed microstructure led to more severe crack arrest.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
D. Han et al.
Summary: By increasing the Mn content, the cyclic hardening capacity and fatigue life of Cu-Mn alloys are notably improved, with significant changes in damage behavior including a transition in cracking mode and enhanced resistance to crack propagation. The study found that the changes in slip mode are closely related to the presence of short-range ordering (SRO) in the alloy.
Article
Materials Science, Multidisciplinary
S. Picak et al.
Summary: In this study, the yield strength of High Entropy Alloy CoCrFeMnNi was improved through Equal Channel Angular Pressing (ECAP), resulting in very high yield strength levels and superior fatigue life at low strain amplitudes. The refined grain size, high density dislocation walls, and dislocation annihilation were identified as key factors governing the fatigue life and hardening behavior of the alloy.
Article
Engineering, Mechanical
Xiaodong Zhang et al.
Summary: The study found that the tensile strength of MarBN steel decreases with increasing temperature, leading to continuous cyclic softening. The relationship between cyclic softening and microstructure at different temperatures was discussed, and a fatigue life prediction model fitted by a quadratic function considering temperature was proposed as an effective method to optimize low cyclic fatigue life and properties.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Nanoscience & Nanotechnology
Kaiju Lu et al.
Summary: The low-cycle fatigue behavior of single-phase, face-centered cubic CoCrNi and CoCrFeMnNi alloys at room temperature shows cyclic hardening followed by softening and a near steady state until failure. CoCrNi exhibits higher strength, lower inelastic-strain, and longer lifetime compared to CoCrFeMnNi. Microstructural investigations reveal no noticeable changes in texture, grain size, and twin fraction, but CoCrNi exhibits planar dislocation structures while CoCrFeMnNi shows well-defined wavy dislocation structures. This is attributed to CoCrNi's lower stacking fault energy, which enhances planar slip and delays deformation localization leading to superior fatigue resistance.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Xiufang Gong et al.
Summary: The study conducted low cycle fatigue experiments under two strain ratios to investigate the effect of mean strain on cycle response and microstructure-sensitive at room temperature. The results showed significant cyclic softening in both modes, with back stress identified as a critical factor controlling the cycle softening behavior.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Multidisciplinary
Lianyong Xu et al.
Summary: This study investigated the relationship between microstructural evolution and low cycle fatigue behavior of 316H austenitic steel at the working temperature of generation-IV nuclear power plants. It was found that different strain amplitudes led to different expressions of cyclic softening behavior due to the evolution of dislocation structures, and dynamic recrystallization resulted in a decrease in dislocation density. A modified life prediction model based on plastic strain energy was proposed to predict the fatigue life of 316H steel.
JOURNAL OF NUCLEAR MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Kaiju Lu et al.
Summary: In this study, the cyclic deformation behavior and microstructural evolution of CoCrFeMnNi high-entropy alloy during low-cycle fatigue were investigated. Results showed that dislocation structures transitioned from planar slip bands to wavy substructures with increasing strain amplitude, and the formation of different dislocation structures was more influenced by the constraints from neighboring grains rather than grain orientation.
Article
Engineering, Mechanical
Mainak Sen et al.
Summary: Two different types of microstructures, bimodal and fully lamellar, in a high strength Ti alloy, Ti-5Al-5V5Mo-3Cr, were studied to understand their low cycle fatigue response and plastic deformation sequence among different phases. Transmission electron microscopy revealed deformation micro mechanisms at various strain amplitudes, while crack path-microstructure interaction explained the observed differences in life at low strain amplitudes.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Materials Science, Multidisciplinary
Y. M. Ren et al.
Summary: The microstructural features of a Ti-6Al-4 V alloy manufactured via high power laser directed energy deposition subjected to low-cycle fatigue loading were studied, revealing that fatigue microcracks typically initiated at the surface of the fatigue specimens and various dislocation substructure features were observed.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Mechanical
C. L. Zou et al.
INTERNATIONAL JOURNAL OF FATIGUE
(2020)
Article
Engineering, Mechanical
A. H. Jabbari et al.
INTERNATIONAL JOURNAL OF FATIGUE
(2020)
Article
Materials Science, Multidisciplinary
Quanyi Wang et al.
MATERIALS & DESIGN
(2020)
Article
Materials Science, Multidisciplinary
Chenglin Wang et al.
Article
Chemistry, Physical
Fuzhou Han et al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Nanoscience & Nanotechnology
Qingyou Zhang et al.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Article
Engineering, Mechanical
J. Zhou et al.
INTERNATIONAL JOURNAL OF FATIGUE
(2017)
Article
Engineering, Mechanical
S. K. Shaha et al.
INTERNATIONAL JOURNAL OF FATIGUE
(2016)
Article
Materials Science, Multidisciplinary
R. Liu et al.
Article
Materials Science, Multidisciplinary
J. Nellessen et al.
Article
Materials Science, Multidisciplinary
Jicheng Gong et al.
Article
Materials Science, Multidisciplinary
S. J. Zinkle et al.
Article
Nanoscience & Nanotechnology
Pengcheng Guo et al.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2013)
Article
Engineering, Mechanical
S. K. Paul et al.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2010)
Review
Materials Science, Multidisciplinary
Hael Mughrabi
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2009)
Article
Nanoscience & Nanotechnology
Jun Tan et al.
SCRIPTA MATERIALIA
(2006)
Article
Materials Science, Multidisciplinary
AF Armas et al.
JOURNAL OF NUCLEAR MATERIALS
(2004)
Article
Engineering, Mechanical
LP Borrego et al.
ENGINEERING FAILURE ANALYSIS
(2004)
Article
Nanoscience & Nanotechnology
L Xiao et al.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2000)
Article
Materials Science, Multidisciplinary
J Crépin et al.