Zobrazeno 1 - 10
of 1 465
pro vyhledávání: '"Hot cracking"'
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 3155-3162 (2024)
We investigated the prevention of hot cracking in a non-weldable Ni-based superalloy by utilizing a passivation layer formed through laser-based directed energy deposition. The addition of Hf to the Ni-based superalloy facilitated the formation of a
Externí odkaz:
https://doaj.org/article/c22a3cfd585444c48443beda85871e4a
Publikováno v:
Journal of Materials Research and Technology, Vol 31, Iss , Pp 2367-2375 (2024)
Hot cracking is the most prevalent defect in the rapid solidification process of alloys, which seriously restricts the mechanical properties of the build. Solidification shrinkage is one of the key factors leading to hot cracking sensitivity, and it,
Externí odkaz:
https://doaj.org/article/990d1e19264245e3a77e3fd26555e267
Publikováno v:
Additive Manufacturing Letters, Vol 11, Iss , Pp 100240- (2024)
Additive manufacturing (AM) of many traditional aluminum alloys is difficult due to hot cracking during cooling, which motivates investigating alternative AM methods that can mitigate this challenge. Here we demonstrate a new pneumatically driven mol
Externí odkaz:
https://doaj.org/article/ddb83afc0bf74ad3a61485e75f03a01f
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 7803-7815 (2024)
The study investigated the microstructures and corrosion behaviors of Hastelloy X (HX) and HX reinforced by cerium oxide particles (HX-C) produced by selective laser melting (SLM) and compared to the wrought equivalent (HX-W). The aim was to eliminat
Externí odkaz:
https://doaj.org/article/c6abce4ec90149149f7589d825e3c863
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 6341-6354 (2024)
Mar-M247 is widely used in several fields as a material with excellent overall performance at high temperatures. However, its complex fabrication process and extremely poor weldability make it very difficult to repair and fabricate. In this study, a
Externí odkaz:
https://doaj.org/article/0bb0e99a0c1c4e42bdc66aa8297a3430
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-16 (2024)
Abstract In order to study the effect of temperature on the structure and mechanical properties of coal with different metamorphic degree. Three coal samples with varying degrees of metamorphism were chosen for analysis. The discrete element software
Externí odkaz:
https://doaj.org/article/e953d30a507a4b8ca50beb8b6c00a3e2
Publikováno v:
Journal of Advanced Joining Processes, Vol 9, Iss , Pp 100206- (2024)
Some aluminum alloys, such as those alloyed with Si and Mg, are difficult to weld due to their susceptibility to hot cracking. Previous research has investigated this challenge in resistance spot welding (RSW). To improve the weldability of the AW-61
Externí odkaz:
https://doaj.org/article/6c314d0639244b139dc1b06d0cb1b98c
Publikováno v:
Journal of Materials Research and Technology, Vol 27, Iss , Pp 2459-2474 (2023)
Laser surface melting (LSM) is an environmentally-safe technique in which melting and solidification occur in a very short reaction time, without affecting the bulk of the material. On the other hand, today, the use of magnesium as a very light metal
Externí odkaz:
https://doaj.org/article/ca690dfba63e497583c51a70ce35de41
Akademický článek
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Publikováno v:
Metals, Vol 14, Iss 9, p 1067 (2024)
Reducing hot cracking is essential for ensuring seamless production of nickel superalloys, which are extensively used in welded structures for aircraft engines. The prevalence of hot cracking in precipitation-strengthened alloy 718 is primarily gover
Externí odkaz:
https://doaj.org/article/9c48d806e87f42f49669b912c5295978