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| 1 | Texture evolution of the Mg/Al laminated composite fabricated by the accumulative roll bonding显示文摘 | H. Chang M.Y. Zheng W.M. Gan K. Wu E. Maawad H.G. Brokmeier | 2009 | Scripta Materialia2009，，： | 1 |
| 2 | Microstructure and me- chanical properties of the Mg/Al laminated composite fabricated by accumulative roll bonding(ARB)显示文摘 | Wu K Chang H Maawad E | 2010 | Materials Science and Engineering A2010，527，： | 1 |
| 3 | The electro-chemo-mechanical coupling in lithium alloy electrodes and its origins显示文摘 | KITZLER T MAAWAD E TOEBBENS D M | 2015 | Journal of the Electrochemical Society2015，162，14： | 1 |
| 4 | Investigation of lasershock peening effects on residual stress state and fatigue perform-ance of titanium alloys显示文摘 | Maawad E Sano Y Wagner L | 2012 | Materials Science and Engineer-ing A2012，536，： | 1 |
| 5 | Investigation of laser shock peening effects on residual stress state and fatigue performance of titanium alloys 显示文摘 | Maawad E Sano Y Wagner L | 2012 | Materials Science and Engineering A2012，536，1： | 1 |
| 6 | Microstructure and me- chanical properties of the Mg/Al laminated composite fabri- cated by accumulative roll bonding (ARB)显示文摘 | Wu K Chang H Maawad E | 2010 | Mater Sci Eng A2010，527，1314： | 1 |
| 7 | Investigation of laser shock peening effects on residual stress state and fatigue performance of titanium alloys显示文摘 | Maawad E Sano Y Wagner L | 2012 | Materials Science and Engineering A2012，，536： | 1 |
| 8 | Microstructure and me- chanical properties of the Mg/Al laminated composite fabri- cated by accumulative roll bonding (ARB)显示文摘 | Wu K Chang H Maawad E | 2010 | Mater Sci Eng: A2010，527，1314： | 1 |
| 9 | Role of solute in stress development of nanocrystalline films during heating:An in situ synchrotron X-ray diffraction study显示文摘The effect of the solute(Mo)on the stress development of nanocrystalline Ni and Ni-Mo films upon heat-ing has been investigated in real time using in situ synchrotron X-ray diffraction.The complex and distinct relationship between the film stress and grain boundaries(GBs)has been examined by the evolution of real-time intrinsic stress in combination with the in situ grain growth and thermal characterizations.The different intrinsic stress evolutions in the Ni and Ni-Mo films during the heating process result from the modification of GBs by Mo alloying,including GB amorphization,GB relaxation,and GB segregation.It has been found that GBs play a vital role in the stress development of nanocrystalline films.The addition of a solute can not only inhibit grain growth but also influence the stress evolution in the film by changing the atomic diffusivity at the GBs.This work provides valuable and unique insights into the effect of solutes on stress development in nanocrystalline films during annealing,permitting control of the film stress through solute addition and heat treatment,which is critical for improving the design,processing,and lifetime of advanced nanocrystalline film devices at high temperatures. | Jing Wang Xiaohu Li Emad Maawad Lu Han Yuan Huang Yongchang Liu Zumin Wang | 2023 | Journal of Materials Science & Technology2023，，13： | 0 |
| 10 | Three-Point Bending Test and Crack Detection by Acoustic Emission on Different Spring Steel Wires with Different Crystallographic Textures显示文摘In the production of compression springs,high forming velocities and grades of deformation during winding and setting may induce cracks that can lead to failure causing risks of an accident and damage.The AE(acoustic emission)technology,a non-destructive monitoring method,can detect acoustic signals reflected from cracks.To establish this method in the production of technical springs,it was necessary,to find out whether the AE signal is influenced by material properties,phase fractions distribution from tempered martensite,retained austenite,and microstructure including crystallographic texture.In addition,it was investigated to what extent the detected AE signal can be useful to separate between an actual crack and other material responses.Within an in-situ three-point bending test with the AE technology,macro-and micro-crack-typical AE signals were detected for five different spring steel wires(SH,VDSiCr,and FDSiCr according to EN-10270-1 and EN-10270-2).The relative energy related to the initiation,propagation,and growth of cracks caused by mechanical stress was measured using a piezoelectric sensor.If a crack AE signal appeared for the first time,the bending tests were stopped immediately.The results show that the frequency spectrum combined with the intensity of the acoustic signals generated during crack growth depends on the material properties and the crystallographic texture.Furthermore,it could be shown that it is possible to differentiate between micro-crack-typical AE signals and other signals that result from different material responses. | Mathias Lorenz Mohammed Salih Daniela Schwerdt Nowfal Al-Hamdany Emad Maawad Norbert Schell Eckehard Müller | 2023 | 材料科学与工程(中英文A版)2023，13，3： | 0 |
| 11 | Investigations on the tensile deformation of pure Mg and Mg–15Gd alloy by in-situ X-ray synchrotron radiation and visco-plastic self-consistent modeling显示文摘In this study,the texture evolutions of two Mg materials during tension are explored.In-situ X-ray synchrotron and Visco-Plastic SelfConsistent(VPSC) modeling are employed to investigate the different deformation modes between pure Mg and Mg-15Gd(wt.%) alloy.These two materials with a strong extrusion texture show large different slip/twinning activity behaviors during tensile deformation.The basal(a) slip has the highest contribution to the initial stage of plastic deformation for pure Mg.During the subsequent plastic deformation,the prismatic slip is dominant due to the strong ED//(100) fiber texture.In contrast,the deformation behavior of Mg-15Gd alloy is more complex.Twinning and basal slip are dominant at the early stage of plastic deformation,but further deformation results in the increased activation of prismatic and pyramidal slips.In comparison to pure Mg,the ratios of the critical resolved shear stress(CRSS) between non-basal slip and basal slip of the Mg-15Gd alloy are much lower. | Yuling Xu Yuanding Huang Yuye Wang Weiming Gan Shiwei Wang Emad Maawad Norbert Schell Norbert Hort | 2023 | Journal of Magnesium and Alloys2023，11，2： | 0 |
| 12 | Effect of wire-arc directed energy deposition on the microstructural formation and age-hardening response of the Mg-9Al-1Zn(AZ91)alloy显示文摘In recent years,wire-arc directed energy deposition(wa DED),which is also commonly known as wire-arc additive manufacturing(WAAM),has emerged as a promising new fabrication technique for magnesium alloys.The major reason for this is the possibility of producing parts with a complex geometry as well as a fine-grained microstructure.While the process has been shown to be applicable for Mg-Al-Zn alloys,there is still a lack of knowledge in terms of the influence of the WAAM process on the age-hardening response.Consequently,this study deals with the aging response of a WAAM AZ91 alloy.In order to fully understand the mechanisms during aging,first,the as-built condition was analyzed by means of high-energy X-ray diffraction(HEXRD)and scanning electron microscopy.These investigations revealed a finegrained,equiaxed microstructure with adjacent areas of alternating Al content.Subsequently,the difference between single-and double-step aging as well as conventional and direct aging was studied on the as-built WAAM AZ91 alloy for the first time.The aging response during the various heat treatments was monitored via in situ HEXRD experiments.Corroborating electron microscopy and hardness studies were conducted.The results showed that the application of a double-step aging heat treatment at 325℃with pre-aging at 250℃slightly improves the mechanical properties when compared to the single-step heat treatment at 325℃.However,the hardness decreases considerably after the pre-aging step.Thus,aging at lower temperatures is preferable within the investigated temperature range of 250-325℃.Moreover,no significant difference between the conventionally aged and directly aged samples was found.Lastly,the specimens showed enhanced precipitation kinetics during aging as compared to cast samples.This could be attributed to a higher amount of nucleation sites and the particular temperature profile of the solution heat treatment. | Gloria Graf Petra Spoerk-Erdely Emad Maawad Michael Burtscher Daniel Kiener Helmut Clemens Thomas Klein | 2023 | Journal of Magnesium and Alloys2023，11，6： | 0 |
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