|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Precipi- tation Behaviour of a Complex Steel 显示文摘 | Harald Leitner Michael Bischof Helmut Clemens | 2006 | Advanced Engineering Materials2006，8，11： | 1 |
| 2 | Technology properties and applications of intermetallic γ - TiAl based alloys 显示文摘 | Clemens Helmut Lorich Alexander | 1999 | Material Research and Advanced Techniques1999，90，8： | 1 |
| 3 | Interventional Management of Renal Bleeding after Partial Nephrectomy显示文摘 | Clemens Baumann Kerstin Westphalen Heiko Fuchs Helmut Oesterwitz Johannes Hierholzer | 2007 | CardioVascular and Interventional Radiology2007，，5： | 1 |
| 4 | Pre- cipitation Behaviour of a Complex Steel 显示文摘 | HaraldLeitner Michael Bischof Helmut Clemens | 2006 | Advanced Engi- neering Materials2006，8，11： | 1 |
| 5 | 473 In Vivo Molecular Imaging Using Fluorescent Anti-TNF Antibodies and Confocal Laser Endomicroscopy Predicts Response to Anti-TNF Therapy in Crohn’s Disease显示文摘 | Raja Atreya Helmut Neumann Clemens Neufert Maximilian J. Waldner Yurdagül Zopf Marcus Willma Christine App Tino Münster Hermann Kessler Stefanie Maas Bernd Gebhardt Ralph Heimke-Brinck Eva Reuter Frank D?rje Tilman T. Rau Thomas D. Wang Ralf Kiesslich Mic | 2013 | Gastroenterology2013，，5： | 1 |
| 6 | On the overaging behaviour of tool steel X38 CrMoV 5-3显示文摘 | Michael Bischof Peter Staron Devrim Caliskanoglu Harald Leitner Christina Scheu Helmut Clemens | 2007 | Materials Science & Engineering A2007，，1： | 1 |
| 7 | Ballistic tests on hot-rolled Ti-6Al-4V plates:Experiments and numerical approaches显示文摘Superior ballistic performance and the lightweight character of Ti alloys are considered as main reasons for their use in armour applications against a broad spectrum of ballistic threats,e.g.bullet,fragment or blast impact.Because dynamic loading caused by typical penetrators is characterized by high strain rates,only specific test methods allow a closer investigation of the respective material behaviour.In the present study,quasi-static and dynamic compression tests as well as ballistic tests were conducted on a twophase a+βalloy Ti-6Al-4V(in m%)manufactured by hot-rolling.Post-deformation heat treatments,influencing microstructure and mechanical properties were applied in order to compare three different microstructural configurations:as-rolled,mill-annealed and bimodal.While,on the one hand,ballistic tests were employed for the determination of the ballistic limit velocity v_(50),compression tests,on the other hand,delivered essential input parameters for the application of the Johnson-Cook constitutive model in a finite element simulation of the impact event.The comparison of experimental results to simulation results was supplemented by means of microstructural characterization of tested samples with the focus set on the prevalently observed deformation and damage mechanisms,as for example adiabatic shearing. | Alexander Janda Benjamin James Ralph Yael Demarty Marcel Sorger Stefan Ebenbauer Aude Prestl Ingo Siller Martin Stockinger Helmut Clemens | 2023 | Defence Technology(防务技术)2023，26，8： | 0 |
| 8 | 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 |
您所在的机构暂未开通此部分的功能，请联系管理员