Zobrazeno 1 - 10
of 560
pro vyhledávání: '"Rajiv S. Mishra"'
Publikováno v:
Journal of Materials Research and Technology, Vol 33, Iss , Pp 2841-2855 (2024)
Microstructurally flexible high entropy alloys (HEAs) can be tailored for strength via dual-phase strengthening mechanisms, which originate from the strain-induced phase transformation microstructural phenomena. One such alloy is a recently synthesiz
Externí odkaz:
https://doaj.org/article/261b5aeb52934da482bb73b9cb04cd74
Publikováno v:
Materials Research Letters, Pp 1-9 (2024)
The high ductile brittle transition temperature of tungsten (W) poses challenges like cracking and porosity during its laser-powder bed additive manufacturing (L-PBFAM). Computational alloy design evaluated niobium (Nb) and carbon (C) to activate eut
Externí odkaz:
https://doaj.org/article/6c8771e0f216445ea56a4bc3a1be7572
Autor:
Ankita Roy, Abhijeet Dhal, Roopam Jain, Priyanka Agrawal, Shreya Mukherjee, B.A. McWilliams, Clara Mock, K.C. Cho, Rajiv S. Mishra
Publikováno v:
Materials & Design, Vol 243, Iss , Pp 113060- (2024)
This work investigates complex heterogeneity in microstructure and mechanical properties of a low alloy martensitic steel fabricated via laser-directed energy deposition (L-DED). A multi-scale characterization starting from macro-scale optical microg
Externí odkaz:
https://doaj.org/article/bf4fac859f75450198da1ea4e3ad5ec1
Autor:
Priyanka Agrawal, Ching-Heng Shiau, Aishani Sharma, Zhihan Hu, Megha Dubey, Yu Lu, Lin Shao, Ramprashad Prabhakaran, Yaqiao Wu, Rajiv S. Mishra
Publikováno v:
Materials & Design, Vol 238, Iss , Pp 112730- (2024)
This study explored solid-state additive friction stir deposition (AFSD) as a modular manufacturing technology, with the aim of enabling a more rapid and streamlined on-site fabrication process for large meter-scale nuclear structural components with
Externí odkaz:
https://doaj.org/article/6706582a069e4cbd8aacc333d1c606be
Autor:
Jiajia Shen, Wei Zhang, J.G. Lopes, Yutao Pei, Zhi Zeng, E. Maawad, N. Schell, Ana C. Baptista, Rajiv S. Mishra, J.P. Oliveira
Publikováno v:
Materials & Design, Vol 238, Iss , Pp 112662- (2024)
In this work, a combination of in-situ high synchrotron X-ray diffraction and electron backscattered diffraction were used to systematically investigate the activation and evolution of the deformation mechanisms in an as-cast Fe42Mn28Co10Cr15Si5 meta
Externí odkaz:
https://doaj.org/article/36921883a383454cbad9f38fb3cbfad4
Autor:
Aishani Sharma, Ravi Sankar Haridas, Priyanka Agrawal, Anurag Gumaste, Thomas Scharf, Kumar Kandasamy, Rajiv S. Mishra
Publikováno v:
Materials & Design, Vol 238, Iss , Pp 112643- (2024)
Electrification is a path towards decarbonization. Identification of novel nanocarbon materials such as graphene or carbon nanotubes (CNTs) offers great potential as a reinforcement material in metal matrix composites (MMCs) due to their superior str
Externí odkaz:
https://doaj.org/article/f6e995ff6e574a92af0c56e68ed485b9
Autor:
Abhijeet Dhal, Saket Thapliyal, Priyanka Agrawal, Ankita Roy, Aishani Sharma, Rajiv S. Mishra, Eric Faierson
Publikováno v:
Materials & Design, Vol 237, Iss , Pp 112602- (2024)
The unique thermokinetics of laser-powder bed fusion additive manufacturing (L-PBFAM) has been exploited for development of a novel high-strength Al-Ni-Ti-Zr-Mn alloy. The addition of 0.5 wt% Mn leads to extraordinary improvement in ultimate tensile
Externí odkaz:
https://doaj.org/article/ad39713796ec4ed29796f0396eafa199
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-8 (2022)
Abstract Smart alloying and microstructural engineering mitigate challenges associated with laser-powder bed fusion additive manufacturing (L-PBFAM). A novel Al–Ni–Ti–Zr alloy utilized grain refinement by heterogeneous nucleation and eutectic s
Externí odkaz:
https://doaj.org/article/42c5d07b783e4a7c90e7ebd0b0c081e5
Publikováno v:
Materials & Design, Vol 230, Iss , Pp 111957- (2023)
Conventional macromechanical tests provide limited insights into complex hierarchical deformation behavior of a transformative high entropy alloy (HEA). In this work, a high throughput microstructure-micromechanical correlative study is presented by
Externí odkaz:
https://doaj.org/article/204ec93a1cd248dd9abdde2882e97376
Autor:
Ravi Sankar Haridas, Priyanka Agrawal, Surekha Yadav, Priyanshi Agrawal, Anurag Gumaste, Rajiv S. Mishra
Publikováno v:
Journal of Materials Research and Technology, Vol 18, Iss , Pp 3358-3372 (2022)
Excellent work hardening in transformation-induced plasticity (TRIP)-enabled metastable high entropy alloys (HEAs) owe to persistent austenite (γ) to martensite (ε) phase transformation; non-basal slip activity and deformation twinning in the trans
Externí odkaz:
https://doaj.org/article/ea3c123fd8e4482b9b4f175511034182