Results 91 to 100 of about 24,153,524 (223)

Knowledge‐Constrained Multi‐Objective Reinforcement Learning for Simultaneous Optimization of Printability and Mechanical Properties in Additively Manufactured Superalloys

Materials Genome Engineering Advances, EarlyView.
A knowledge‐constrained multi‐objective reinforcement learning (MORL) framework is proposed, embedding cracking susceptibility as a hard constraint to simultaneously optimize printability and mechanical properties of additively manufactured superalloys.
Pei Liu, Xueting Ren, Shibo Wei, Shuai Guan, Guohao Liu, Teng An, Haiyou Huang, Zhongnan Bi   +7 more
wiley   +1 more source

Comparison of Oxidation Resistance of YSZ and YSZ-Alumina Coatings on Ni-based Superalloy [PDF]

, 2013
Cyclic oxidation of an Y2O3-stabilized ZrO2 (YSZ) coating on Ni-based superalloy was performed in a furnace at 1100 °C for 4 h. After each cycle, the specimen was cooled in the furnace, inspected and its peripheral condition was observed.
Ghobeiti Hasab, Mehdi, Rashnuei, Kamran
core   +1 more source

Oxidation resistance of three Ni-based powder metallurgy superalloys

Journal of Aeronautical Materials
The oxidation resistance of FGH4097，FGH4099，and a new Ni-based powder metallurgy (PM) superalloy FGHXX at 750-1100 ℃ is investigated by isothermal oxidation tests on the basis of FGH4095 and FGH4096 superalloys.
WANG Yu, WANG Mingli, XU He, LIU Yufeng, ZHOU Lei   +4 more
doaj   +1 more source

Creep Mechanism Mapping of Lamellar Ti–Al Alloys With Crystal‐Plasticity Phase‐Field and Interpretable Machine Learning Framework

Materials Genome Engineering Advances, EarlyView.
Crystal‐plasticity phase‐field simulations combined with stacked machine learning map the creep microstructure relationship in lamellar Ti‐Al alloys. Interpretable learning identifies lamellar thickness, elastic strain energy, and interfacial energy as dominant factors governing the diffusion‐to‐dislocation creep transition and overall creep resistance.
Zan Zhang, Kunning Niu, Shenglong Wang, Xianshun Wu, Yongsheng Li   +4 more
wiley   +1 more source

Characterisation of subsurface oxidation damage in Ni based superalloy, RR1000 [PDF]

, 2014
Isothermal oxidation of the Ni based superalloy, RR1000, has been performed at 700, 750 and 800°C for exposure periods up to 2000 h. A chromia external oxide scale with an outer layer of rutile was formed together with extensive internal oxidation of ...
Child, D. J., Hardy, M. C., Cruchley, S.; id_orcid, Evans, H. E., Taylor, Mary   +4 more
core   +1 more source

Large scale 3-D phase-field simulation of coarsening in Ni-base superalloys

MATEC Web of Conferences, 2014
In this study we present a large scale numerical simulation of γ-γ′ microstructure evolution in Ni-base superalloy using the multi-phase field method in three dimensions. We numerically simulated precipitation hardening heat treatment cycles. Large scale
Kumar Rajendran Mohan, Shchyglo Oleg, Steinbach Ingo   +2 more
doaj   +1 more source

Effect of solid solution temperature on microstructure of Hf-containing K416B Ni-based superalloy with high W-content

Journal of Aeronautical Materials, 2019
By means of microstructure observation on Hf-containing K416B Ni-based superalloy with high W-content after solid solution heat treatment at different temperatures, the effect of solid solution temperature on microstructure of the alloy was investigated.
HOU Guichen, SU Haijun, XIE Jun, XUN Shuling, YU Jinjiang, SUN Xiaofeng, ZHOU Yizhou   +6 more
doaj   +1 more source

Tailoring Laser Powder Bed Fusion and Post‐Processing Parameters for JIS SKD61 Tool Steels: Surface Roughness, Microstructure, and Mechanical Properties

steel research international, EarlyView.
Laser powder bed fusion of JIS SKD61 tool steel is systematically optimized using a Taguchi design and ANOVA. Hatch spacing and layer thickness are identified as dominant parameters controlling surface roughness and tensile strength. Subsequent tempering at 600°C improves microstructural stability and mechanical performance, enabling high‐density SKD61
Masrurotin Masrurotin, Andi Ard Maidhah, Maziar Ramezani, Wojciech Macek, Cho‐Pei Jiang   +4 more
wiley   +1 more source

Mechanical and Microstructural behaviour of CMSX-4 Ni-based Superalloy joined by Capacitor Discharge Welding [PDF]

, 2007
A single crystal Ni-based superalloy was welded by employing a capacitor discharge welding (CDW) machine, the material microstructure was widely observed by means of optical and scanning electron microscopy, in order to characterize the effect of ...
CAVALIERE, Pasquale Daniele, PANELLA, Francesco   +1 more
core   +1 more source

Synchronously enhanced printability and properties of additively manufactured nickel-based superalloys via alloying minor Sc

Journal of Materials Research and Technology
As major forming elements of γ′ strengthening phase, Al and Ti are critical for achieving superior properties of Ni-based superalloy. However, Al + Ti over 6 wt% leads to poor printability and cracking during additive manufacturing.
Liming Tan, Xiaoqiong Ouyang, Lin Ye, Heng Dong, Xiangyou Xiao, Jie Su, Lan Huang, Feng Liu   +7 more
doaj   +1 more source