Chendong Shao
Shanghai Jiao Tong University
Ultimate tensile strengthShielding effectHeat-affected zoneCreepComposite materialMaterials scienceWeldingJoint (geology)Laves phaseAlloyLathStress concentrationStress ratioBase metalFracture (geology)Grain boundaryCrack tip opening displacementStress–strain curveLaserMechanicsFracture mechanicsNucleationStrain (chemistry)Precipitation (chemistry)MicrostructureStress (mechanics)Laser beam weldingFracture toughnessToughness
15Publications
5H-index
48Citations
Publications 17
Newest
#1Mingzhe Fan (SJTU: Shanghai Jiao Tong University)
#2Chendong Shao (SJTU: Shanghai Jiao Tong University)H-Index: 5
Last. Fenggui Lu (SJTU: Shanghai Jiao Tong University)H-Index: 27
view all 6 authors...
Abstract null null The digital image correlation technique was employed to investigate the variations of local stress-strain behavior in tensile and creep-fatigue tests for 9Cr/CrMoV welded joint. The strain concentration shifts from fine grain HAZ to over-tempered HAZ of CrMoV in tensile test. For strain-controlled creep-fatigue test, different ratcheting of sub-regions is observed, which is attributed to mismatched yielding and negative mean stress caused by stress relaxation. In addition, cra...
Source
#1Qi Wang (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Chendong Shao (SJTU: Shanghai Jiao Tong University)H-Index: 5
Last. Fenggui Lu (SJTU: Shanghai Jiao Tong University)H-Index: 27
view all 5 authors...
Fatigue crack growth (FCG) behavior of 9Cr/CrMoV dissimilar welded joint at elevated temperature and different stress ratios was investigated. Attention was paid to the region near the fusion line of 9Cr where carbon-enriched zone (CEZ) and carbon-depleted zone (CDZ) formed due to carbon migration during the welding process. Hard and brittle tempered martensite dominated the stress ratio-insensitive FCG behavior in the coarse grain zone (CGZ) of 9Cr-HAZ. For crack near the CGZ–CEZ interface, cra...
Source
#1Anqi Zuo (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Chendong Shao (SJTU: Shanghai Jiao Tong University)H-Index: 5
Last. Fenggui Lu (SJTU: Shanghai Jiao Tong University)H-Index: 27
view all 5 authors...
Abstract In this paper, the Laves phase precipitation behavior and its effect on toughness of 10Cr-1Mo steel weld joint after different aging time at 600 °C have been studied. The toughness of the base metal (BM) declined greatly at the first 1000 h aging, while the toughness of the weld metal (WM) kept stable before aged for 1000 h and fell sharply from 1000 h to 4000 h. The severe deterioration in toughness of BM when aged for 1000 h was resulted from the rapid precipitation of dense and small...
Source
#1Yaqi Wang (SJTU: Shanghai Jiao Tong University)H-Index: 2
#2Chendong Shao (SJTU: Shanghai Jiao Tong University)H-Index: 5
Last. Fenggui Lu (SJTU: Shanghai Jiao Tong University)H-Index: 27
view all 5 authors...
Abstract Interfacial creep failure was strongly affected by the solidified grain boundary (SGB) for steel/nickel dissimilar metal welded joints, especially at higher temperatures and lower stresses. Short, long, and mixed length SGBs were found as three distinct characteristics adjacent to the interface. These characteristics were attributed to the heterogeneous nucleation, multi-layer thermal cycle, and pre-solidified macrosegregation inducing local cooling rate differences, respectively. Becau...
Source
#1Chendong Shao (SJTU: Shanghai Jiao Tong University)H-Index: 5
#2Haichao CuiH-Index: 17
Last. Fenggui LuH-Index: 27
view all 5 authors...
The brittle fracture driving forces of laser beam welds (LBWs) and arc welds (AWs) are investigated and compared numerically with a center through-thickness cracked panel (CTCP) and a standard fracture toughness specimen (3-point bending specimen, 3PB). The effects of hard zone width (H) and strength mismatch ratio (Sr) were systematically studied at global strain (e∞) of 0.1% and 0.2%. It was found that the peak opening stress near the crack tip decreased with narrower H for LBW at e∞ = 0.2%, w...
Source
#1Longfei Zhao (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Chendong Shao (SJTU: Shanghai Jiao Tong University)H-Index: 5
Last. Fenggui Lu (Osaka University)H-Index: 27
view all 5 authors...
Fracture toughness property is of significant importance when evaluating structural safety. The current research of fracture toughness mainly focused on crack in homogeneous material and experimental results. When the crack is located in a welded joint with high-gradient microstructure and mechanical property distribution, it becomes difficult to evaluate the fracture toughness behavior since the stress distribution may be affected by various factors. In recent years, numerical method has become...
Source
#1Yuan GaoH-Index: 2
#2Chendong Shao (SJTU: Shanghai Jiao Tong University)H-Index: 5
Last. Fenggui LuH-Index: 27
view all 5 authors...
The fracture toughness of 617 Ni-based weld metal (WM) under different elevated temperatures was tested with a novel method and its fracture mechanism was investigated in this paper. It was found that the fracture toughness of WM was lower than that of base metal (BM) at the same temperature, which was mainly due to the coarse columnar structure, differences in misorientation, and precipitated phases. For both BM and WM, the fracture toughness was lower at elevated temperature due to decreased s...
Source
#1Zhongyuan Feng (Osaka University)H-Index: 3
#2Thein Lin Aung (Osaka University)H-Index: 1
Last. Ninshu Ma (Osaka University)H-Index: 21
view all 6 authors...
Abstract Stress concentration and residual stress have a significant influence on fatigue life of welded joints. In order to reduce the stress concentration of welded joints, a mathematical design method of tensile triangles (MTT) based on bionics was applied to weld shape design. Accordingly, the stress concentration of various weld beads in the corner boxing welded joint and the fillet welded T-joint was dissected using our in-house FEM software JWRIAN. It was found that there existed a large ...
Source
#1Tao FangH-Index: 1
#2Xia LiuH-Index: 10
Last. Fenggui LuH-Index: 27
view all 5 authors...
Tempering cooling rate plays a significant role in the impact toughness of 2CrMoV weld metal. Three different tempering cooling rate experiments were carried out; it is found that the impact toughness of weld metal improved from 44.61 to 117.49 J as the cooling rate increased from 5 to 40 °C/h. Microstructure characterization revealed that the large blocky M–A constituents and cluster precipitation were considered to act as stress concentration sources and cleavage fracture initiators at a cooli...
Source
#1Chang-Zhen Zhang (SJTU: Shanghai Jiao Tong University)H-Index: 1
#2Chendong Shao (SJTU: Shanghai Jiao Tong University)H-Index: 5
Last. Fenggui Lu (SJTU: Shanghai Jiao Tong University)H-Index: 27
view all 5 authors...
The rupture behavior of the modified 10Cr–1Mo steel multi-layer welded joint is determined by the fine-grain zones of the weld metal adjacent to the fusion line during the long-term creep test at 620 °C. The microstructures of multi-layer weld metal before and after the creep tests were characterized in detail, and its role in creep behavior was systematically investigated. Most grain boundaries of subgrains represented the low-angle boundaries in the weld metal adjacent to the fusion line both ...
Source
This website uses cookies.
We use cookies to improve your online experience. By continuing to use our website we assume you agree to the placement of these cookies.
To learn more, you can find in our Privacy Policy.