Results 271 to 280 of about 2,002,827 (334)

Corrosion behaviour of Ni-Cr alloys in mixed oxidising gases at 650 °C

, 2020
Binary Ni-Cr alloys containing 5−30 wt% Cr were exposed to Ar-20O2, Ar-20O2-20H2O, Ar-20CO2, Ar-20CO2-20H2O and Ar-20H2O (vol.%) at 650 °C. In dry/wet O2, and dry CO2, 5−25 Cr alloys formed a three-layered structure: an external NiO layer, an inner oxide
Cheng-yang Jiang, Yun Xie, C. Kong, Jianqiang Zhang, D. Young   +4 more
semanticscholar   +1 more source

Influence of grain size on the small fatigue crack initiation and propagation behaviors of a nickel-based superalloy at 650 °C

Journal of Materials Science & Technology, 2019
GH4169 at 650 °C in atmosphere was investigated by using single edge notch tensile specimens. The number of main cracks and crack initiation mechanisms at the notch surface strongly depended on the grain size. The crack initiation life accounted for more
Zhu Xumin, Congyang Gong, Yun-Fei Jia, Run-Ping Wang, Chengcheng Zhang, Yao Fu, S. Tu, Xiancheng Zhang   +7 more
semanticscholar   +1 more source

Corrosion performance of heat-resisting steels and alloys in supercritical carbon dioxide at 650 °C and 15 MPa

Energy, 2019
The corrosion behavior of martensitic heat-resistant steel T91, austenitic heat-resistant steel TP347HFG and nickel-based alloy 617 in high-temperature supercritical carbon dioxide at 650 °C and 15 MPa was investigated. Raman spectrum, X-ray diffraction,
Z. Liang, Y. Gui, Yungang Wang, Qinxin Zhao   +3 more
semanticscholar   +1 more source

Algorithm 650

ACM Transactions on Mathematical Software, 1987
Two square root algorithms (for integer and floating point data types) are presented, which are simpler and more efficient than standard procedures. These could be effectively used as the basis of hardware-based square root generators as well as for software implementations.
openaire   +1 more source

Robustness of 650-V Enhancement-Mode GaN HEMTs Under Various Short-Circuit Conditions

IEEE transactions on industry applications, 2019
This paper presents the short-circuit behavior and degradation of 650-V/60-A enhancement-mode Gallium nitride (GaN) high electron mobility transistors (HEMTs) under various test conditions.
He Li, Xiao Li, Xiaodan Wang, Xintong Lyu, Haiwei Cai, Yazan M. Alsmadi, Liming Liu, S. Bala, Jin Wang   +8 more
semanticscholar   +1 more source

PERFORM 650

Alloy Digest, 2016
Abstract PERFORM 650 is one of the Perform series of steels, which are low carbon micro-alloyed steels that are thermomechanically rolled. The 650 in the title refers to the minimum yield strength in MPa (94 ksi). The USA equivalent is Perform 94.
openaire   +1 more source

Investigation on ratcheting-fatigue behavior and damage mechanism of GH4169 at 650 ℃

Materials Science & Engineering: A, 2019
Combined microscopy and morphology were employed to investigate the effect of ratcheting-fatigue characteristic of GH4169 superalloy. All tests were implemented on a closed-loop servo hydraulic testing machine at 650 ℃.
Y. Liu, Lijun Wang, Guanyi Chen, Bin Li, Xi Wang   +4 more
semanticscholar   +1 more source

Investigation the effect of precipitating characteristics on the creep behavior of HR3C austenitic steel at 650 ℃

Materials Science & Engineering: A, 2019
The microstructure evolution in HR3C (25Cr-20Ni-Nb-N steel) austenitic heat-resistant steel after creep rupture at 650 ℃ are carefully characterized in this paper.
Zheng-fei Hu, Zhen Zhang
semanticscholar   +1 more source

MiR-650 regulates the proliferation, migration and invasion of human oral cancer by targeting growth factor independent 1 (Gfi1).

Biochimie, 2019
Oral cancer being one of the lethal cancers is generally detected at advanced stages and causes significant mortality world over. The unavailability of the reliable biomarkers and therapeutic targets/agents forms a bottleneck in the treatment of oral ...
Ningning Sun, S. Libo, Chuanbin Wu, Haijiang Sun, Z. Qing   +4 more
semanticscholar   +1 more source

Temporal evolution of a model Co-Al-W superalloy aged at 650 °C and 750 °C

Acta Materialia, 2018
The temporal evolution of a γ(f.c.c.)/γ’ (L1 2 ) Co-8.8Al-7.3 W superalloy aged at 650 °C (10 min–4096 h) and 750 °C (10 min–256 h) is studied utilizing atom-probe tomography (APT), scanning electron microscopy, and Vickers microhardness testing.
Peter J. Bocchini, C. Sudbrack, R. Noebe, D. Seidman   +3 more
semanticscholar   +1 more source