Results 131 to 140 of about 458,757 (252)

Concentration dependence of the retarding effect on tungsten recrystallization under high-dose helium ion implantation

Nuclear Fusion
Recrystallization, a critical issue that weakens the strength and thermal shock resistance of tungsten-based plasma-facing material in fusion devices, is effectively retarded by helium.
Jiaguan Peng, Yuanfang Lu, Xiuli Zhu, Tiangang Zhang, Hanfeng Song, Bingchen Li, Long Cheng, Xiancai Meng, Hongxian Xie, Sijie Hao, Yuhao Li, Linyun Liang, Yue Yuan, Guang-Hong Lu   +13 more
doaj   +1 more source

Radiation damage in helium ion–irradiated reduced activation ferritic/martensitic steel

Nuclear Engineering and Technology, 2018
Nanocrystalline reduced activation ferritic/martensitic (RAFM) steel samples were prepared using surface mechanical attrition treatment (SMAT). Un-SMATed and SMATed reduced activation ferritic/martensitic samples were irradiated by helium ions at 200°C ...
L.D. Xia, W.B. Liu, H.P. Liu, J.H. Zhang, H. Chen, Z.G. Yang, C. Zhang   +6 more
doaj   +1 more source

Accelerated Mechanochemical Depolymerization of Poly(styrene) Due To Formation of a Cohesive State

ChemSusChem, Volume 19, Issue 7, 14 April 2026.
A highly reactive, continuous state of poly(styrene) (PS) was discovered to aid its mechanochemical depolymerization, which is (a) more reactive than PS powder, (b) insensitive to effects of oxygen, (c) driven by shear rather than compressive stresses, and (d) sensitive to PS loading.
Yuchen Chang, Aubrey M. Hepstall, Adrian H. Hergesell, Claire L. Seitzinger, Pawel Chmielniak, Ina Vollmer, Carsten Sievers   +6 more
wiley   +1 more source

Boron-10 stimulated helium production and accelerated radiation displacements for rapid development of fusion structural materials

Journal of Materiomics
Boron doping, combined with neutron capture in fission reactors, has been used to simulate the helium effect on fusion structural materials. However, inhomogeneous helium bubble formation was often observed due to boron segregation to grain boundaries ...
Yunsong Jung, Ju Li
doaj   +1 more source

Quantifying helium-bubble swelling in RAFM steels using TEM and the surface-step method

Nuclear Materials and Energy
In fusion-relevant environments where transmutation helium accumulates, He bubble formation can become a critical damage mechanism in reduced-activation ferritic/martensitic (RAFM) steels because it drives swelling and can degrade mechanical performance.
Sangeun Kim, Hyung-Ha Jin, Chang-hoon Lee, Sanghoon Noh, Sungjin Kwon, Dong Won Lee, Chansun Shin   +6 more
doaj   +1 more source

Temperature-Dependent Model of Helium Bubble Expansion and Bursting in Tungsten

, 2021
Brandon F. Lee, K. Hammond
semanticscholar   +1 more source

Comparative study of helium bubbles, microstructure, and mechanical properties in the white bright band of SA508-3/52(M) dissimilar metal weld joints

Journal of Materials Research and Technology
After metallographic etching, unetched white bright bands (WBB) are evident in the SA508-3/52(M) dissimilar metal weld joints. The WBBs in both joint without a buttering layer (JWOBL) and joint with a buttering layer (JWBL) are composed of austenite ...
Xusheng Qian, Chuanzong Li, Ziyu Tian, Kejin Zhang, Hao Lu   +4 more
doaj   +1 more source

Real-time helium bubble growth in tungsten by in-situ GISAXS

Nuclear Materials and Energy
Nuclear fusion, as a carbon-free energy source, is actively pursued by the international community. However, the irradiation by helium (He) of the walls facing the plasma can lead to important damages at the surface and deeper in the bulk, affecting the ...
L. Corso, S. Curiotto, F. Cheynis, P. Muller, E. Bernard, M. Cabie, C. Martin, F. Leroy   +7 more
doaj   +1 more source

Helium bubbles evolution mechanism of SA508-3/52 joint and its effect on nanoindentation hardness and swelling

Heat Treatment and Surface Engineering
After metallographic corrosion of dissimilar metal welded joints, a distinct uncorroded bright band, referred to as the ‘white bright band’ (WBB), is often observed on the austenite side immediately adjacent to the fusion line.
Xusheng Qian, Chuanzong Li, Ruoyu Li, Kejin Zhang, Ziyu Tian, Junmei Chen, Chun Yu, Hao Lu   +7 more
doaj   +1 more source

Temperature-dependent bubble growth under synergistic interactions of hydrogen and helium in tungsten

Nuclear Fusion
A novel theoretical model based on modified diffusion rate equations is proposed to simulate the retention of hydrogen isotopes and the dynamics of bubble growth in tungsten (W) when exposed to simultaneous hydrogen (H) and helium (He) plasma ...
Chunjie Niu, Wentao Qin, Siddharth Suman, Weiyuan Ni, Weifeng Liu, Hongyu Fan, Guangjiu Lei, Dongping Liu   +7 more
doaj   +1 more source