Muhammad Naeem

Deformable precipitates locally modify fault-mediated plasticity for strength-ductility synergy

Liliana Romero-Resendiz, Jesus Israel S. Palafox, Wei Xiong, Yan Lu et autres

Precipitates in structural alloys are conventionally understood as passive obstacles to dislocation motion. Here we show that semi-coherent hexagonal close-packed precipitates in a low-stacking-fault-energy Ni50Co30Ru20 multi-principal element alloy cooperate with planar-fault plasticity in the face-centered cubic matrix. In-situ neutron diffraction, high-resolution electron …

cn, gb, mx, us, de, hk, jp, es (code pays fourni par la source)

Nanolamellar hybrid high-entropy alloys with superior micromechanical properties

Shivam Dangwal, Yoji Mine, Shohei Ueki, Xavier Sauvage et autres

jp, fr (code pays fourni par la source)

Influence of the as-built microstructure on the recrystallization of an additively manufactured Inconel939 Ni-based superalloy

I. Rodríguez-Barber, Liliana Romero-Resendiz, Muhammad Naeem, T. Voisin et autres

This study investigates the influence of the as-built microstructure on the recrystallization (RX) behavior and mechanical properties of the Ni-based superalloy Inconel 939 produced by laser powder bed fusion (PBF-LB/M). Two distinct as-built microstructures were obtained by varying the hatch distance (h …

es, gb, us (code pays fourni par la source)

Non-recrystallized zones govern exceptional cryogenic strength–ductility synergy in heterostructured CrMnFeCoNi

Liliana Romero-Resendiz, Marta Mirolo, Muhammad Naeem, Loïc Jégou et autres

The CrMnFeCoNi high-entropy alloy has been extensively studied at cryogenic temperatures, yet existing work relies almost exclusively on homogeneous microstructures and assumes that deformation twinning increases monotonically with decreasing temperature. Here we show that deliberately retaining non-recrystallized ultrafine/nanograin zones within a heterostructured …

In situ HEXRD data for tensile deformation of heterostructured CrMnFeCoNi high-entropy alloy at room temperature and 77 K

Liliana Romero-Resendiz, Loïc Jégou, Marta Mirolo, Muhammad Naeem

This dataset contains the raw high-energy X-ray diffraction (HEXRD) data used to investigate the tensile deformation of a heterostructured equiatomic CrMnFeCoNi high-entropy alloy at room temperature and 77 K. Measurements were performed in situ at the ID11 beamline of the European Synchrotron …

Diffraction contrast tomography data for three-dimensional grain-boundary and slip-transfer analysis in Inconel 600

Muhammad Naeem, Liliana Romero-Resendiz, Loïc Jégou, H. Fang

This dataset contains synchrotron X-ray diffraction contrast tomography (DCT) measurements of a polycrystalline Inconel 600 specimen acquired at the ID11 beamline of the European Synchrotron Radiation Facility (ESRF). The measurements were performed to enable three-dimensional reconstruction of the grain structure and grain-boundary …

Low-temperature deformation mechanism in a work-hardenable body-centered cubic high-entropy alloy with a large uniform elongation

L. Zhu, Weixia Dong, Muhammad Naeem, Haojie Kong et autres

Metals/alloys with a body-centered cubic (BCC) structure usually exhibit a high yield strength but suffer from poor work-hardening capability, leading to limited uniform elongation. This limitation becomes even more pronounced at low temperatures, where a ductile-to-brittle transition is commonplace. High-entropy alloys (HEAs), …

hk, cn, gb, jp (code pays fourni par la source)

Retained-austenite transformation precedes grain fragmentation in carbon-partitioned QP1180 steel

Liliana Romero-Resendiz, Muhammad Naeem, V. Amigó, Christina Reinhard et autres

Understanding the mechanistic interplay between phase transformation and grain fragmentation is critical for microstructural control in advanced structural steels subjected to severe shear. Here, we investigate the activation sequence of retained-austenite transformation and grain fragmentation along the radial strain gradient of a …

gb, es, us (code pays fourni par la source)

Ductilisation of tungsten using rolling and rhenium alloying

Matthew J. Lloyd, Íris Carneiro, Jóhan P. Magnussen, Muhammad Naeem et autres

The brittleness of W at low temperatures remains a major challenge for its application in load-bearing components. To address this problem, two strategies were explored in this study: (1) the application of plastic deformation via rolling and (2) alloying with the ductilising …

gb, cn (code pays fourni par la source)

Erratum to ’ Severe plastic deformation for producing superfunctional ultrafine-grained and heterostructured materials: An interdisciplinary review’ [J. Alloys Compd. 1002 (2024) 174667]

Kaveh Edalati, Anwar Q. Ahmed, Saeid Akrami, Kei Ameyama et autres

jp, hu, iq, ru, at, ua, pl, es, br, kr, cr, tr (code pays fourni par la source)

Enhanced strength and ductility in an additively manufactured Al10SiMg alloy at cryogenic temperatures

Muhammad Naeem, Asif Ur Rehman, Liliana Romero-Resendiz, Elmas Salamcı et autres

Abstract The increasing demand for lightweight materials that maintain mechanical integrity at ultralow temperatures has driven the development of advanced alloys for cryogenic applications. Additive manufacturing using laser powder bed fusion (LPBF) offers a scalable approach to producing alloys with tailored properties. …

hk, cn, gb, tr, jp (code pays fourni par la source)

Paradoxes of heterostructured materials

Liliana Romero-Resendiz, Muhammad Naeem

Abstract Heterostructured materials (HSMs) represent a groundbreaking advancement in materials science, achieving unprecedented combinations of strength and ductility that challenge traditional paradigms. This review explores the state of the art, focusing on foundational concepts such as the Hall–Petch relationship and dislocation dynamics, …

gb (code pays fourni par la source)