Results 21 to 30 of about 264 (147)

Hetero-deformation-induced (HDI) plasticity induces simultaneous increase in both yield strength and ductility in a Fe50Mn30Co10Cr10 high-entropy alloy [PDF]

, 2021
Low yield strength is the bottleneck of the face-centered cubic-structured high-entropy alloys (HEAs). Here, the strategy of hetero-deformation-induced (HDI) plasticity is applied by hetero-structuring to induce strengthening and strain hardening for a ...
Liu D(刘动), Wang, Chang, Wang J(王晶), Jiang P(姜萍), Yuan FP(袁福平), Wu XL(武晓雷)   +5 more
core   +3 more sources

Strong, ductile, and hierarchical hetero-lamellar-structured alloys through microstructural inheritance and refinement. [PDF]

Proc Natl Acad Sci U S A
The strength−ductility trade-off exists ubiquitously, especially in brittle intermetalliccontaining multiple principal element alloys (MPEAs), where the intermetallic phases often induce premature failure leading to severe ductility reduction ...
Shi P, Li Y, Li Z, Jiang X, Yan J, Zhou R, Qin Y, Lin Y, Huang J, Tan B, Wang Y, Wen T, Ye B, Ling C, Luan J, Shen Z, Ding B, Li Q, Zheng T, Ren W, Zhang T, Ren Y, Zhong Y, Liu CT, Gao H, Zhu Y.   +25 more
europepmc   +4 more sources

Dual-Array Nano Configuration for High-Performance Metastable β Titanium Alloys. [PDF]

Adv Sci (Weinh)
This work resolves a fundamental paradox in metastable alloys by establishing a novel dislocation‐phase coupling mechanism, enabling dynamic microstructure control for simultaneous thermal stability and deformability. Geometrically ordered α‐nanograins achieve unprecedented 500°C strength‐ductility synergy (863 MPa UTS, 78.3% elongation).
Li T, Wu R, Liu J, Oh SH, Wu X, Park H, Lee BJ, Kato H, Kim HS, Liu X, Li X.   +10 more
europepmc   +2 more sources

High Specific Strength Eutectic High-Entropy Alloy: Collaborative Effects of TRIP, TWIP, and Nanoprecipitation. [PDF]

Adv Sci (Weinh)
This study has designed a novel CoCrNiAl eutectic high‐entropy alloy with a two‐level heterogeneous structure with extremely high strength. The high mechanical properties originate from the collaborative strengthening mechanisms, including TWIP, TRIP, and nanoprecipitation.
Wang ZQ, Li XT, Zhang ZJ, Zhang ZF.
europepmc   +2 more sources

In-Situ Study on the Tensile Deformation and Fracture Mechanism of a Bimodal-Structured Mg-Gd-Y Alloy. [PDF]

Materials (Basel), 2023
The as-extruded (EX) Mg-Gd-Y alloy studied here exhibited a bimodal structure, composed of fine dynamic recrystallized (DRXed) grains with random orientations and longitudinal coarse hot-worked grains.
Ning J, Gao B, Zhou J, Chen L, Tang G, Li S.   +5 more
europepmc   +2 more sources

Heterostructured Metallic Materials: Plastic Deformation and Strain Hardening [PDF]

, 2022
Strong and tough metallic materials are desired for light-weight structural applications in transportation and aerospace industries. Recently, heterostructures have been found to possess unprecedented strength-and-ductility synergy, which is until now ...
Wu Xiaolei, Zhu Yuntian
core   +1 more source

Heterostructuring an equiatomic CoNiFe medium-entropy alloy for enhanced yield strength and ductility synergy [PDF]

, 2022
High-/medium-entropy alloys (H/MEAs) of face-centered-cubic-structured single phase usually suffer from a glaring drawback of low yield strength. Even worse, the trade-off emerges frustratingly between strength and ductility as strength increases.
Ding, Xin-Xin, Wang, Chang, Qu, Hua, Jiang, Ping, Yuan, Fu-Ping, Wu, Xiao-Lei, Wang, Jing, Liu, Dong, Liu, Guang-Hua   +8 more
core   +4 more sources

Harnessing Bifunctional Nitrogen-Dislocation Interactions for a Record Ultra-Strong-and-Ductile Duplex Titanium Alloy. [PDF]

Adv Sci (Weinh)
By engineering bifunctional nitrogen‐dislocation interactions, this work constructs a heterogeneous lamellar structure with N‐rich low‐angle boundaries and coherent nanotwinned martensites, enabling ultrahigh yield/tensile strength (1532/1869 MPa) and activating massive dislocations via stress‐driven bow‐out/cross‐slip.
Zhang C, Li X, Li S, Zhang J, Liu G, Sun J.   +5 more
europepmc   +2 more sources

Hetero-deformation-induced stress in additively manufactured 316L stainless steel

Materials Research Letters, 2020
Heterogeneous cellular structure combined with bimodal grain structure contributed to the high hetero-deformation-induced (HDI) stress in selective laser melted 316L stainless steel (SLMed 316L SS) and high grain boundary density at molten pool ...
Decheng Kong, Chaofang Dong, Xiaoqing Ni, Zhang Liang, Cheng Man, Xiaogang Li   +5 more
doaj   +1 more source

Enhanced strength and ductility of the low-carbon steel with heterogeneous lamellar dual-phase structure produced by cyclic intercritical rolling

Journal of Materials Research and Technology, 2023
Steels with outstanding mechanical properties are desired in industrial applications. Martensitic structure significantly increases the strength in low-carbon steels, but usually sacrifices their ductility. In order to improve the combination of strength
Bo Gao, Li Wang, Yi Liu, Junliang Liu, Lirong Xiao, Yudong Sui, Wenwen Sun, Xuefei Chen, Hao Zhou   +8 more
doaj   +1 more source