Review
Nanoscience & Nanotechnology
Hamed Mirzadeh
Summary: This overview article summarizes the high strain rate superplasticity achieved through friction stir processing (FSP), emphasizing the importance of microstructural characteristics for superplastic forming operations. It also discusses the effects of main processing parameters on heat input and grain size, as well as recent progress in the application of FSP for processing superplastic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Miao Wang, Xingwei Huang, Peng Xue, Shangquan Wu, Chuanyong Cui, Qingchuan Zhang
Summary: In this study, friction stir processing (FSP) was used to process a high-strength and high-melting-point Ni-Co based superalloy, achieving enhanced strength and ductility. The FSP samples exhibited significantly higher yield strength and ultimate tensile strength at both room temperature and 400 degrees C, demonstrating a synergy between strength and ductility. The mechanisms contributing to the improved mechanical properties, such as grain-boundary and nanotwin strengthening, were investigated and discussed.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Metallurgy & Metallurgical Engineering
Miao Wang, Xing-Wei Huang, Peng Xue, Chuan-Yong Cui, Qing-Chuan Zhang
Summary: Friction stir processing was applied to high-strength and high-melting-point Ni-Fe-based superalloy for the first time, resulting in negligible tool wear. Different rotation rates were found to impact microstructure and tensile properties, with continuous dynamic recrystallization identified as the grain refinement mechanism.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Materials Science, Multidisciplinary
William P. Bates, Vivek Patel, Harikrishna Rana, Joel Andersson, Jeroen De Backer, Mattias Igestrand, Livan Fratini
Summary: The present study aims to enhance the mechanical properties of hypereutectic aluminium-silicon castings by modifying the microstructure and reducing defects through friction stir processing (FSP). By altering the tool revolution and the number of FSP passes, the study identified the specimen with the highest number of passes to have the most uniform properties, resulting from reduced casting porosities and refined silicon particle distribution in the friction stir processed zone.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Lin Ma, Changzhuang Zhou, Yao Shi, Qinghe Cui, Shude Ji, Kang Yang
Summary: The experiments comparing conventional friction stir processing and ultrasonic-assisted friction stir processing showed that ultrasound can enhance grain refinement in the as-cast A356 aluminium alloy, particularly with relatively high processing heat-input. Ultrasonic vibration also positively impacted the hardness, tensile strength, and elongation of the alloy.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Vivek Patel, Wenya Li, Joel Andersson, Na Li
Summary: This study focuses on the refinement of microstructure and evaluation of corrosion behavior in thick AZ31B magnesium alloy using stationary shoulder friction stir processing (SSFSP). The results show that the use of stationary shoulder reduces heat input and temperature gradient in the stir zone, leading to improved corrosion resistance of the alloy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Deli Sang, Xiaoli Xin, Ruidong Fu, Yijun Li
Summary: The effect of deformation twinning on microstructure refinement was investigated during friction stir processing of Fe-38Mn alloy. It was found that the stir zone contained recrystallized grains and fine deformed grains, with a high proportion of twin boundaries. The cyclic multidirectional shear deformation enhanced the deformation twinning effect, leading to a quick and effective microstructure refinement.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Kai Hu, Yanjin Guan, Jiqiang Zhai, Yi Li, Fengjiao Chen, Ya Liu, Jun Lin
Summary: Multi-pass friction stir processing (MFSP) is an effective method to enhance the mechanical properties, plasticity, and corrosion resistance of Mg-Li alloy. The tensile strength and microhardness of the treated plate have been improved, and the elongation increased by up to 109.2%.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Mechanics
M. V. N. V. Satyanarayana, Soumya Bathula, Adepu Kumar
Summary: Friction stir processing improves ductility and fatigue behavior of aluminum alloy, and external cooling can further reduce fatigue crack growth rate.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Optics
Jiangdong Cao, Xueyu Cao, Bochen Jiang, Fang Yuan, Da Yao, Jian Huang
Summary: The study found that high power laser shock processing induced microstructural evolution in the Ni-based superalloy GH202, including dislocation slip and twinning. LSP also promoted dynamic recrystallization and the formation of dislocation arrays and subgrains within 250 microns in depth. Beyond 200 microns, the dislocation density significantly decreased.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Physical
S. Aravind Krishna, N. Radhika, Bassiouny Saleh, S. Manivannan
Summary: In this study, CoCrFeCuTi High Entropy Alloys (HEA) powder was reinforced on an SS304 steel substrate using a Friction Stir Processing (FSP) approach to achieve grain size refinement and improvement in mechanical properties. The microstructural analysis showed better grain refinement and dispersion of HEA reinforcement in the processed substrate. The Vickers microhardness and tensile strength were improved and the FSP-processed substrate with HEA also exhibited better resistance to corrosion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Anna Bodyakova, Maksim Tkachev, Georgy Raab, Rustam Kaibyshev, Andrey N. Belyakov
Summary: The effect of severe plastic deformation through ECAE-Conform and cold rolling on the microstructures of Cu-0.1Cr-0.1Zr alloy was investigated. The results showed that an increase in ECAE-Conform strain improved grain refinement and subsequent cold rolling further led to grain size reduction and strengthening. The fraction of ultrafine grains with a size of 160 nm increased with an increase in the number of ECAE-Conform passes, resulting in a higher yield strength of above 550 MPa.
Article
Materials Science, Multidisciplinary
Mehrad Tahaghoghi, Abbas Zarei-Hanzaki, Behnam Mirshekari, Ali Moshiri, Matias Jaskari, L. Pentti Karjalainen, Hamid Reza Abedi
Summary: This research demonstrates the crucial role of basal slip in the development of substructure during friction stir processing of a magnesium alloy. The activity of different slip systems is identified by examining the intragranular lattice rotation axes. Shear strain applied during the procedure is stored in the matrix through slip-induced rotations at the grain level. Rotations around distinct Taylor axes create slip domains that are separated from the parent grains by necessary boundaries, contributing significantly to grain refinement. Basal slip is easily activated in grains with different stored energy, while nonbasal slip is more dependent on the amount of local applied strain. Determining the contribution of different slip systems in accommodating strain shows that basal slip dominates the fraction of low-angle boundaries in the microstructure, leading to the development of the ultimate grain boundary structure.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Ashish Kumar Srivastava, Amit Rai Dixit, Manish Maurya, Ambuj Saxena, Nagendra Kumar Maurya, Shashi Prakash Dwivedi, Rajesh Bajaj
Summary: The demand for tailored properties and lightweight characteristics has accelerated the development of metal matrix composites (MMCs). Friction stir processing (FSP) is an alternative to traditional methods, offering environmentally friendly solid-state approach that refines grain structure and enhances mechanical properties. Research focuses on the advancements in FSP, particularly in aluminum and magnesium-based alloys, highlighting futuristic approaches in various industrial applications.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Engineering, Mechanical
S. Ragunath, N. Radhika, S. Aravind Krishna, N. Jeyaprakash
Summary: The study focuses on improving the performance and microstructure of SS410 steel through Friction Stir Processing with ball-milled AlSiBeTiV HEA. The characterization of the ball milled powder showed densely packed irregular fragments with an average particle size of 15μm and the phase evolved was FCC. The processed surface exhibited greater grain refinement and uniform distribution of the reinforced HEA particles, resulting in improved mechanical properties and wear resistance.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Obstetrics & Gynecology
Kimiya Padidar, Elham Vahidi, Marjan Sabbaghian, Ali Behmanesh, Roshanak Shams
Summary: Smoking has a significant impact on male fertility, reducing sperm production, motility, and fertilizing capacity. This study used bioinformatics analysis to identify miRNAs and their target genes associated with male infertility in smokers. Several differentially expressed miRNAs were found in smoking men compared to non-smokers, and a module of eight hub genes highly correlated with male infertility and impairment of spermatogenesis was identified. These findings provide potential markers for the early detection of infertility in smokers.
Article
Obstetrics & Gynecology
Hamideh Karimi, Parnaz Borjian Boroujeni, Marjan Sabbaghian, Anahita Mohseni Meybodi
Summary: Genetic variations in the NANOS3 gene play a crucial role in non-obstructive azoospermia, while the mRNA expression levels of NANOS3 show significant differences among patients with obstructive azoospermia, Sertoli cell-only syndromes (SCOS), and maturation arrest (MA).
REPRODUCTIVE SCIENCES
(2022)
Article
Andrology
Roudabeh Mohammadi, Seyed Omidreza Mousavi, Nadia Sheibak, Fatemehsadat Amjadi, Zahra Zandieh, Samaneh Aghajanpour, Khashayar Aflatoonian, Marjan Sabbaghian, Maryam Eslami, Reza Aflatoonian
Summary: This study investigated the effects of DNA fragmentation of spermatozoa on the expression of growth factors by a human oviduct epithelial cell line. The results showed that most of the growth factors were upregulated under the influence of spermatozoa with abnormal DNA fragmentation index, while only one gene was down-regulated. The study suggests that DNA fragmentation in spermatozoa may alter sperm behavior in the oviduct.
Article
Nanoscience & Nanotechnology
M. Sabbaghian, R. Mahmudi, K. S. Shin
Summary: The influence of equal channel angular pressing (ECAP) and simple shear extrusion (SSE) on the microstructure, texture development, and mechanical properties of Mg-4Zn alloy was investigated. It was found that SSE resulted in smaller grain sizes and a different texture development compared to ECAP. Both ECAP and SSE improved the strength of the alloy, but SSE showed better results.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Xiaohuan Pan, Lifei Wang, Liangliang Xue, Mahdi Sabbaghian, Pengbin Lu, Wei Wu, Guangsheng Huang, Bin Xing, Hongxia Wang
Summary: This study investigates the dynamic recrystallization, twinning behaviors, and mechanical response of AZ31 Mg alloy sheet pre-twinned in the transverse direction at room temperature. The strain path angle is found to significantly affect the microstructural evolution and mechanical response. Continuous dynamic recrystallization and detwinning play important roles in coordinating strain at different strain path angles. Both strengthening and weakening effects are observed in the pre-twinned samples.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
G. Faraji, M. Sabbaghian, A. R. Geranmayeh, R. Mahmudi
Summary: The microstructure, shear strength, and bio-corrosion behavior of extruded Mg-2Zn-1Mn, Mg-2Zn1Gd, and Mg-2Al-1Mn alloys were investigated for developing degradable implant alloys. The AM21 alloy showed higher strength and resistance to corrosion due to its uniform structure, finer grain size, and presence of an Al- and Mn-containing oxide layer on the surface. The new SSRS test proved to be a suitable method for studying stress corrosion cracking behavior in small Mg samples.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Metallurgy & Metallurgical Engineering
N. Fakhar, M. Sabbaghian
Summary: Fine-grained ZK60 alloy sheets were produced using the DECLE process and sheet extrusion, and the hot shear deformation behavior was studied. The constitutive equations based on shear punch test results revealed that dislocation creep was the main deformation mechanism, and the material constants n and Q were influenced by microstructural factors.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Materials Science, Multidisciplinary
Naeimeh Fakhar, Ehsan Khademi, Mahdi Sabbaghian, Amir Momeni, Faramarz Fereshteh-Saniee, Peter Nagy, Abel Szabo, Jeno Gubicza
Summary: This study investigates the effect of Dual Equal Channel Lateral Extrusion (DECLE) on the microstructural evolution and mechanical behavior of an annealed AA5083 aluminum alloy. The results show that DECLE is effective in grain refinement and can significantly reduce the grain size. The material constants, such as the stress exponent and activation energy, are found to be influenced by factors such as grain size, high-angle grain boundaries (HAGBs), dislocation density, and second phase particles fraction.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
S. Najafi, M. Sabbaghian, A. Sheikhani, P. Nagy, K. Fekete, J. Gubicza
Summary: The microstructure, texture, and mechanical properties of extruded ZK60 alloys containing different rare earth elements (RE) were studied. The addition of RE elements refined the grain size and enhanced the shear strength of the alloys.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Andrology
Hamid Kalantari, Marjan Sabbaghian, Paraskevi Vogiatzi, Amarnath Rambhatla, Ashok Agarwal, Giovanni M. Colpi, Mohammad Ali Sadighi Gilani
Summary: This study investigated the indications for performing AZF screening in infertile males and the correlation between sperm count and AZF deletions. The findings suggest that certain chromosomal abnormalities and low sperm count should be considered as indicators for Y chromosome microdeletion (YCM) screening during infertility evaluation. These results highlight the need to update male infertility guidelines to improve the quality of diagnosis.
WORLD JOURNAL OF MENS HEALTH
(2023)
Article
Materials Science, Multidisciplinary
M. Sabbaghian, B. Ebrahimpourghandi, R. Mahmudi
Summary: The effects of hot extrusion on the microstructure, shear strength, bio-corrosion and stress corrosion cracking (SCC) behavior of the as-cast Mg-2.5Gd-0.5Zr alloy were investigated. The extruded alloy exhibited higher strength and lower ductility after shear testing, and decreased strength and ductility after SCC tests in the corrosive medium. The improved mechanical properties and corrosion resistance of the extruded alloy were attributed to the refinement of grain structure and absence of coarse second-phase particles.
Article
Chemistry, Physical
Soroush Najafi, Alireza Sheikhani, Mahdi Sabbaghian, Peter Nagy, Klaudia Fekete, Jeno Gubicza
Summary: The influence of rare earth (RE) elements on the microstructure and mechanical performance of an extruded ZK60 Mg alloy was investigated. The addition of Y and Ce-rich RE elements resulted in finer grain size, the formation of new precipitates, and changes in the initial fiber texture. As a result, the strength increased and the ductility decreased. The work hardening capacity and the hardening exponent of the alloy were reduced due to grain refinement.
Review
Andrology
Sajal Gupta, Rakesh Sharma, Ashok Agarwal, Neel Parekh, Renata Finelli, Rupin Shah, Hussein Kandil, Ramadan Saleh, Mohamed Arafa, Edmund Ko, Mara Simopoulou, Armand Zini, Osvaldo Rajmil, Parviz Kavoussi, Keerti Singh, Rafael F. Ambar, Haitham Elbardisi, Pallav Sengupta, Marlon Martinez, Florence Boitrelle, Marco G. Alves, Kareim Khalafalla, Shubhadeep Roychoudhury, Gian Maria Busetto, Jaime Gosalvez, Nicholas Tadros, Ayad Palani, Marcelo Gabriel Rodriguez, Christina Anagnostopoulou, Sava Micic, Lucia Rocco, Taymour Mostafa, Juan G. Alvarez, Sunil Jindal, Hassan Sallam, Israel Maldonado Rosas, Sheena E. M. Lewis, Sami AlSaid, Mesut Altan, Hyun Jun Park, Jonathan Ramsay, Sijo Parekattil, Marjan Sabbaghian, Kelton Tremellen, Paraskevi Vogiatzi, Mohammad Ali Sadighi Gilani, Donald P. Evenson, Giovanni M. Colpi
Summary: Retrograde ejaculation is a condition where semen flows backward during ejaculation, potentially causing infertility. This may be due to anatomical, neurological, or pharmacological reasons, and treatment approaches depend on the specific cause. Alkalinizing urinary pH or adding sperm wash media before ejaculation may help preserve sperm viability in cases of RE.
WORLD JOURNAL OF MENS HEALTH
(2022)
Review
Andrology
Ashok Agarwal, Rakesh K. Sharma, Sajal Gupta, Florence Boitrelle, Renata Finelli, Neel Parekh, Damayanthi Durairajanayagam, Ramadan Saleh, Mohamed Arafa, Chak Lam Cho, Ala'a Farkouh, Amarnath Rambhatla, Ralf Henkel, Paraskevi Vogiatzi, Nicholas Tadros, Parviz Kavoussi, Edmund Ko, Kristian Leisegang, Hussein Kandil, Ayad Palani, Gianmaria Salvio, Taymour Mostafa, Osvaldo Rajmil, Saleem Ali Banihani, Samantha Schon, Tan V. Le, Ponco Birowo, Gokhan Ceker, Juan Alvarez, Juan Manuel Corral Molina, Christopher C. K. Ho, Aldo E. Calogero, Kareim Khalafalla, Mesut Berkan Duran, Shinnosuke Kuroda, Giovanni M. Colpi, Armand Zini, Christina Anagnostopoulou, Edoardo Pescatori, Eric Chung, Ettore Caroppo, Fotios Dimitriadis, Germar-Michael Pinggera, Gian Maria Busetto, Giancarlo Balercia, Haitham Elbardisi, Hisanori Taniguchi, Hyun Jun Park, Israel Maldonado Rosas, Jean de la Rosette, Jonathan Ramsay, Kasonde Bowa, Mara Simopoulou, Marcelo Gabriel Rodriguez, Marjan Sabbaghian, Marlon Martinez, Mohamed Ali Sadighi Gilani, Mohamed S. Al-Marhoon, Raghavender Kosgi, Rossella Cannarella, Sava Micic, Shinichiro Fukuhara, Sijo Parekattil, Sunil Jindal, Taha Abo-Almagd Abdel-Meguid, Yoshiharu Morimoto, Rupin Shah
Summary: Sperm vitality testing is essential in infertility management to differentiate between asthenozoospermia and necrozoospermia. The management of necrozoospermia depends on its etiology, with no standardized treatment available currently.
WORLD JOURNAL OF MENS HEALTH
(2022)
Review
Andrology
Rakesh Sharma, Sajal Gupta, Ashok Agarwal, Ralf Henkel, Renata Finelli, Neel Parekh, Ramadan Saleh, Mohamed Arafa, Edmund Ko, Armand Zini, Nicholas Tadros, Rupin Shah, Rafael F. Ambar, Haitham Elbardisi, Pallav Sengupta, Marlon Martinez, Florence Boitrelle, Mara Simopoulou, Paraskevi Vogiatzi, Jaime Gosalvez, Parviz Kavoussi, Hussein Kandil, Ayad Palani, Marcelo Rodriguez Pena, Osvaldo Rajmil, Gian Maria Busetto, Christina Anagnostopoulou, Sava Micic, Marco G. Alves, Lucia Rocco, Taymour Mostafa, Juan G. Alvarez, Sunil Jindal, Hassan N. Sallam, Israel Maldonado Rosas, Sheena E. M. Lewis, Sami AlSaid, Mesut Altan, Hyun Jun Park, Jonathan Ramsay, Sijo Parekattil, Marjan Sabbaghian, Kelton Tremellen, Kareim Khalafalla, Damayanthi Durairajanayagam, Giovanni M. Colpi
Summary: Leukocytospermia, defined as the presence of peroxidase-positive leukocytes in semen, may lead to oxidative stress and is associated with issues such as reduced sperm quality and DNA fragmentation. It could be a sign of infection in the male genital tract, caused by common uro-pathogens.
WORLD JOURNAL OF MENS HEALTH
(2022)
