Zobrazeno 1 - 10
of 686
pro vyhledávání: '"heterogeneous microstructure"'
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 5976-5986 (2024)
In this paper, 316L-containing Ti–6Al–4V alloy was fabricated by laser powder bed fusion (LPBF) through mixing Ti–6Al–4V and 4.5 wt% 316L powders, and the dynamic compressive mechanical properties and deformation mechanism at different strain
Externí odkaz:
https://doaj.org/article/7a6badeaf33946c284c54373a7a4389b
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 673-682 (2024)
Fatigue property is an important index for novel high-entropy alloys (HEAs) before their engineering applications. Here we engineer a Al0·3CoCrFeNi HEA with hierarchically heterogeneous microstructure by cold rolling and annealing treatment, which i
Externí odkaz:
https://doaj.org/article/ad03b44ded594d7cb92589d476c354c1
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 471-479 (2024)
An ultra-high strain rate (104 s−1) dynamic plastic deformation treatment at liquid nitrogen temperature (LNT-DPD) followed by annealing is carried out to obtain dual heterogeneity of grain size and dislocation density in an equiatomic CrCoNi mediu
Externí odkaz:
https://doaj.org/article/70cc5d74676b4e61bc0b68bef632e140
Publikováno v:
Materials & Design, Vol 246, Iss , Pp 113328- (2024)
Achieving exceptional ductility in ultra-high strength steels has long been a formidable challenge, particularly when the yield strength reaches 2.0 GPa. In this study, we have designed an innovative tri-phase lamellar microstructure in medium Mn ste
Externí odkaz:
https://doaj.org/article/c4d10076e0d84fb2a3d3dd63a9d738ea
Publikováno v:
Journal of Materials Research and Technology, Vol 30, Iss , Pp 5894-5904 (2024)
Coarse austenite grains are unavoidable in the low carbon steels processed by twin-roll strip casting. Unfortunately, the polygonal ferrite (PF) grains cannot be refined by conventional on-line cooling process, resulting in low strength. In this work
Externí odkaz:
https://doaj.org/article/7885ec7a6b6345bebd90f479c26483b4
Publikováno v:
Journal of Materials Research and Technology, Vol 29, Iss , Pp 3606-3613 (2024)
Cu–Al2O3/Cu laminated dual heterogeneous microstructure composites with alternating coarse/fine grain distributions were prepared using a combination of accumulative roll bonding and annealing processes. The average layer thickness of the Al2O3/Cu
Externí odkaz:
https://doaj.org/article/db7dbba6fefb491086be950ae50f86bc
Publikováno v:
Journal of Materials Research and Technology, Vol 29, Iss , Pp 1962-1970 (2024)
Recently, medium and high-entropy alloys with heterogeneous features have exhibited excellent synergistic effects of strength and toughness. In this work, we have produced a series of cast CrCoNi medium entropy alloys with various heterogeneous micro
Externí odkaz:
https://doaj.org/article/bf42ebcd23c34ee6a75752f75cdbb8fd
Publikováno v:
Materials Research Letters, Vol 12, Iss 3, Pp 149-171 (2024)
Metals and alloys with heterogeneous microstructures exhibit an enhanced combination of strength and ductility, compared to their counterparts with homogeneous microstructures. Additive manufacturing (AM) techniques offers a new opportunity to induce
Externí odkaz:
https://doaj.org/article/33de092bfb66454e825bdf32b278d945
Publikováno v:
Virtual and Physical Prototyping, Vol 19, Iss 1 (2024)
This study employed the effect of sub-critical annealing heat treatment on the microstructure and anisotropy of the hybrid additive manufactured TC11 alloy. The results demonstrate that after sub-critical annealing, a gradient microstructure with the
Externí odkaz:
https://doaj.org/article/6b2684e48f034dba987a7c4a9eb52d33
Publikováno v:
Materials & Design, Vol 243, Iss , Pp 113064- (2024)
This work introduced a facile method for fabricating heterostructures in a medium Mn steel via a direct warm rolling process. The heavy warm rolling promoted the transformation of metastable austenite (∼12.2 vol%) into hard domain α’ martensite,
Externí odkaz:
https://doaj.org/article/a9c7291016874ac7a93ee86a57dc938f