Results 21 to 30 of about 20,067 (256)

Effect Mechanism of Curling Temperature on the Toughness of Titanium Microalloyed High-strength Steel GCL700 [PDF]

Teshugang
The effect of curling temperature on the mechanical properties of Ti microalloyed high-strength steels was investigated using electron backscatter diffraction， transmission electron microscopy， scanning electron microscopy and mechanical experiments.The ...
Wang　Yi, Che　Zhichao, Chen　Yufeng, Yang　Shufeng, Zhang　Junfen, Xue　Qihe, Li　Jingshe
doaj   +3 more sources

Impact toughness of Al-Li system alloys at low temperatures.

Journal of Japan Institute of Light Metals, 1987
Al-2.7%Li-1.2%Cu-0.8%Mg-0.1%Zr wrought alloys are heat treated to improve their impact toughness at lower temperatures, although a number of laminated cracks form in the vertical direction to the fracture surface. Low melting point elements, K and Na, are found on the fractured surface by Auger spectroscopy.
KOBAYASHI, Toshiro, NIINOMI, Mitsuo, DEGAWA, Kimio   +2 more
openaire   +2 more sources

Improvement in low-temperature toughness of Fe-6.5Mn-0.08C Medium-Mn steel by multi-step heat treatment

Journal of Materials Research and Technology, 2023
In this study, a novel multi-step heat treatment method, including intercritical annealing and tempering, is proposed to improve the low-temperature toughness of Fe-6.5Mn-0.08C medium-manganese (Mn) steel.
Seung-Hyeok Shin, Young-Chul Yoon, Sang-In Lee, Byoungchul Hwang   +3 more
doaj   +1 more source

Development of TP170P Big Size High-grade Steel Gun Pipe

Teshugang, 2023
As the diameter of the casing in the reservoir becomes larger and larger， and the well go deeper and deeper， the demand for strength and toughness of large-diameter perforating barrel becomes stronger.
Zhou Jiaxiang, Wu Liangliang, Zhang Xu, Wu Yongchao, An Shengyue   +4 more
doaj  

Study on impact toughness of TMCP and quenched and tempered high strength steels

Case Studies in Construction Materials
In this study, the effect of steel rolling technique, temperature, yield strength and welding heat input on the impact toughness of high-strength steels is studied. The impact toughness of five kinds of high strength steels with yield strength of 550 MPa,
Jin Jiang, M. Wu, T.T. Xu, W. Bao, Z.H. Li   +4 more
doaj   +1 more source

The Influence of Centerline Segregation on Impact Toughness in Welding Heat-Affected Zone of X70 Pipeline Steel

Metals
The influence of centerline segregation on the low-temperature impact toughness of the heat-affected zone (HAZ) of welded joints was studied by welding experiments on X70 steel plates rolled from continuous casting slabs with segregation grades of class ...
Fujian Guo, Han Zhang, Wenle Liu, Xuelin Wang, Chengjia Shang   +4 more
doaj   +1 more source

Study on the effect of micro-shrinkage porosity on the ultra-low temperature toughness of ferritic ductile iron

High Temperature Materials and Processes, 2022
In this study, the ductile iron ingots are cast using a metal mold, and the riser neck diameter is changed to control the micro-shrinkage porosity, which can affect the ultra-low temperature toughness of ferritic ductile iron.
Chen Shuying, Li Qingchun, Sun Ming, Song Jiajian, Sun Haiqing, Chang Guowei   +5 more
doaj   +1 more source

Insight into the Role of Mo Content on the Microstructure and Impact Toughness of X80 Thick-Walled Low-Temperature Pipeline Steel

Metals, 2023
In this manuscript, the effects of Mo content on the microstructure and impact toughness of X80 thick-walled low-temperature pipeline steel were studied.
Jinxing Jiang, Zhongde Zhang, Liyang Zhao, Yingping Guan, Liangzeng Yuan, Qingfeng Wang   +5 more
doaj   +1 more source

Tempforming as an Advanced Processing Method for Carbon Steels

Metals, 2020
The microstructural mechanisms providing delamination toughness in high-strength low-alloyed steels are briefly reviewed. Thermo-mechanical processing methods improving both the strength and impact toughness are described, with a close relation to the ...
Anastasiya Dolzhenko, Rustam Kaibyshev, Andrey Belyakov   +2 more
doaj   +1 more source

The Role of Splitting Phenomenon under Fracture of Low-Carbon Microalloyed X80 Pipeline Steels during Multiple Charpy Impact Tests

Applied Mechanics, 2022
The ambiguity of the splitting effect on X80 low-carbon microalloyed pipeline steels’ tendency towards brittle fracture prompted an experimental study of impact toughness scattering based on multiple Charpy impact tests in a temperature range from 20 °C ...
Matvey Matveevich Kantor, Konstantin Grigorievich Vorkachev, Vyacheslav Aleksandrovich Bozhenov, Konstantin Aleksandrovich Solntsev   +3 more
doaj   +1 more source