scholarly journals In Situ Observation of the Deformation and Fracture Behaviors of Long-Term Thermally Aged Cast Duplex Stainless Steels

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 258 ◽  
Author(s):  
Shilei Li ◽  
Yanli Wang ◽  
Xitao Wang
Keyword(s):  
Thermal Aging ◽  
Critical Value ◽  
Tensile Fracture ◽  
In Situ Observation ◽  
Loading Direction ◽  
Deformation And Fracture ◽  
Fracture Behaviors ◽  
Initial Cracks

Cast duplex stainless steel (CDSS) components suffer embrittlement after long-term thermal aging. The deformation and fracture behaviors of un-aged and thermally aged (at 400 °C for 20,000 h) CDSS were investigated using in situ scanning electron microscopy (SEM). The tensile strength of CDSS had a small increase, and the tensile fracture changed from ductile to brittle after thermal aging. Observations using in situ SEM indicated that the initial cracks appeared in the ferrite perpendicular to the loading direction after the macroscopic stress exceeded a critical value. The premature fracture of ferrite grains caused stress on the phase boundaries, leading the cracks to grow into austenite. The cleavage fracture of ferrite accelerated the shearing of austenite and reduced the plasticity of the thermally aged CDSS.

scholarly journals Geometric design of micron-sized crystalline silicon anodes through in situ observation of deformation and fracture behaviors

2017 ◽  
Vol 5 (25) ◽  
pp. 12793-12802 ◽  
Author(s):  
Xing-yu Zhang ◽  
Wei-Li Song ◽  
Zhanli Liu ◽  
Hao-Sen Chen ◽  
Teng Li ◽  
...  
Keyword(s):  
Crystalline Silicon ◽  
Failure Process ◽  
Geometric Design ◽  
Electrochemical Performances ◽  
In Situ Observation ◽  
Silicon Anodes ◽  
Deformation And Fracture ◽  
Fracture Behaviors ◽  
Hollow Microstructures

The whole failure process of micron-sized crystalline silicon anodes was in situ observed, and novel anisometric–hollow microstructures enhance the electrochemical performances.

Microstructure evolution and impact fracture behaviors of Z3CN20-09M stainless steels after long-term thermal aging

2013 ◽  
Vol 433 (1-3) ◽  
pp. 41-49 ◽  
Author(s):  
S.L. Li ◽  
Y.L. Wang ◽  
H.L. Zhang ◽  
S.X. Li ◽  
K. Zheng ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Stainless Steels ◽  
Thermal Aging ◽  
Impact Fracture ◽  
Fracture Behaviors

In-situ investigation on tensile deformation and fracture behaviors of a new metastable β titanium alloy

2021 ◽  
Vol 799 ◽  
pp. 140187
Author(s):  
Jing Wang ◽  
Yongqing Zhao ◽  
Wei Zhou ◽  
Qinyang Zhao ◽  
Shixing Huang ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Tensile Deformation ◽  
Deformation And Fracture ◽  
In Situ Investigation ◽  
Fracture Behaviors

scholarly journals Long-term in situ observation of barnacle growth on soft substrates with different elasticity and wettability

Soft Matter ◽  
2011 ◽  
Vol 7 (16) ◽  
pp. 7281 ◽  
Author(s):  
Nafees Ahmed ◽  
Takayuki Murosaki ◽  
Akira Kakugo ◽  
Takayuki Kurokawa ◽  
Jian Ping Gong ◽  
...  
Keyword(s):  
In Situ Observation

scholarly journals Tracking the impacts of the Aru glacier collapses on downstream lakes

2020 ◽  
Author(s):  
Yanbin Lei ◽  
Tandong Yao ◽  
Lide Tian ◽  
Yongwei Sheng ◽  
Jingjuan Liao ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Lake Level ◽  
In Situ Observation ◽  
Lake Surface ◽  
Level Increase ◽  
Lake Morphology ◽  
Western Tibetan Plateau ◽  
Ice Avalanche

Abstract. Two giant glaciers at the Aru range, western Tibetan Plateau, collapsed suddenly on 17 July and 21 September 2016, respectively, causing fatal damage to local people and their livestock. The ice avalanches, with a total volume of 150 × 106 m3, had almost melted by September 2019. Based on in-situ observation, bathymetry survey and satellite data, here we show the impacts of the two glacier collapses on the downstream lakes, the outflow Aru Co and the terminal Memar Co, in terms of lake morphology, water level and water temperature in the subsequent four years (2016–2019). After the first glacier collapse, the ice avalanche slid into Aru Co along with a large amount of debris, which significantly modified the lake’s shoreline and bathymetry. Lake surface temperature (LST) at Aru Co and Memar Co exhibited a significant decrease of 2–4 oC in the first 1–2 weeks after the first glacier collapse due to the intruding ice into Aru Co and its melting. Memar Co significantly deepened by 12.5 m between 2000 and 2018, with accelerated lake level increase after the glacier collapses. Memar Co expanded rapidly at a rate of 0.80 m/yr between 2016 and 2019, which is about 30 % higher than the average rising rate between 2003 and 2014. The meltwater from ice avalanches was found to contribute to about 26.4 % of the increase in lake storage between 2016 and 2019. This study implies that the Aru glacier collapses had long-term and dramatic impacts on the downstream lakes.

Sign in / Sign up

Export Citation Format

Share Document