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| 1 | Improvement of Toughness of Ultrahigh Strength Steel Aermet 100显示文摘The influence of double aging on the microstructure and mechanical properties of ultrahigh strength steel Aermet100 was analyzed. Under the double aging, there is no apparent decrease in the strength of steel. However, theimpact fatigue life can be prolonged by 35.5% and dynamic fracture toughness be raised by 22.6% respectively, ascompared with the normal aging. Based on the observation of microscopic structure, the physical mechanism ofthe prolongation of impact fatigue life and the enhancement of stability of the reverted austenite, AR, is analyzedfurther. The results show that this new technique is a breakthrough of combination optimization between strengthand toughness for Aermet 100 steel. In the light of the current understanding on this subject, the volume fractureof soften and tough AR formed in process of heat preservation at higher temperature of double aging increasesdrastically. Moreover, during the treatment of lower temperature of double aging, the carbon separating from themartensitic ferrite will diffuse into AR, resulting that the martensitic brittleness decreases and the stability of ARincreases. | Liuding WANG Laizhu JIANG Ming ZHU Xiao LIU Wangmin ZHOU | 2005 | Journal of Materials Science & Technology2005，21，5： | 15 |
| 2 | Investigation of Transformation for Ultrahigh Strength Steel Aermet 100显示文摘The heat-stagnation curves of two quenched and cryogenically treated ultrahigh strength AF1410 and Aermet 100 steels during heating and cooling in furnace have been measured. The results showed that the curve displayed an abnormal terrace in the course of heating, and within the temperature range corresponding to the terrace, the formation and growth of both cementite Fe3C and secondary hardening phase M2C in the steel make the carbon content in matrix ob- viously vary. It is in the region of terrace that the optimum combination of tensile strength and fracture toughness is obtained because of secondary hardening. Based on the measured heat-stagnation curve, several transformation points have been determined and the correctness was also verified by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Furthermore, the influence of heating rate and tempering temperature on the crystal structure and stability of austenite has been studied. | Liuding WANG+, Lin LIU, Chengxi AO, Xiaojun LIU, Changle CHEN and Mokuang KANG (Northwestern Polytechnical University, Xi’an 710072, China) | 2000 | Journal of Materials Science & Technology2000，16，5： | 4 |
| 3 | Experimental investigation of a passive self-tuning resonator based on a beam-slider structure显示文摘This work investigates a self-tuning resonator composed of a slender clamped-clamped steel beam and a freely movable slider.The clamped-clamped beam exhibits hardening nonlinearity when it vibrates in large amplitude,providing a broad bandwidth of dynamic response.The moving slider changes the mass distribution of the whole structure,and provides a passive self-tuning approach for capturing the high-energy orbit of the structure.In the case without inclination,adequate inertial force that mainly depends on the vibration amplitude of the beam and the position of the slider can drive the slider to move from the side toward the centre of the beam.This movement amplifies the beam response when the excitation frequency is below 37 Hz in our prototyped device.In the multi-orbit frequency range(28-37 Hz),the self-tuning and magnification of beam response can be achieved when the slider is initially placed in an appropriate position on the beam.Once the beam is disturbed,however,the desired response in the high-energy orbit can be lost easily and cannot be reacquired without external assistance.In an improved design with a small inclination,the introduced small gravitational component enables the slider to move from the higher side toward the lower side when the beam amplitude is small.This property sacrifices the less efficient self-tuning region below 25 Hz,but can enable the beam to acquire and maintain the high-energy orbit response in the multi-orbit frequency range(28-39 Hz),which is resistant to disturbance.The proposed resonator in this paper not only broadens the frequency bandwidth of dynamic response,but also enables capture and maintenance of the high-energy orbit in a completely passive way.Such a passive self-tuning structure presents an advantage in the design of broadband vibration energy-harvesting systems. | Liuding Yu Lihua Tang Tiejun Yang | 2019 | Acta Mechanica Sinica2019，35，5： | 3 |
| 4 | New analysis and design of a RF rectifier for RFID and implantable de- vices显示文摘 | LIUD S I3 F B ZOU X C | 2011 | Sensors2011，11，7： | 1 |
| 5 | Ag and CdS nanoparticles co-sensitized TiO, nanotubes for enhancing visible photoelectrochemical performance显示文摘 | WANGQ YANG X LIUD etal | 2012 | Electrochimica Acta2012，83，： | 1 |
| 6 | 显示文摘 | ZHENGY XUG LIUD etal | 2002 | Electrophorosis2002，23，24： | 1 |
| 7 | Plating and surface 显示文摘 | Liude M | 1981 | Finishing1981，，3： | 1 |
| 8 | Synthesisandpropertiesofhighlybranchedpoly(urethaneimide)viaA2+B3approach显示文摘 | LiuD ZengS HuQ etal | 2010 | PolymBull2010，64，： | 1 |
| 9 | 查看详情显示文摘 | Wang Z LiuD GuH Zhu A W Tian Y Shi GY | | 0，，15： | 1 |
| 10 | World's largest mac-roalgal bloom caused by expansion of seaweed aquaculture in China显示文摘 | LIUD Y KEESING J K XING Q G | 2009 | Marine Pollution Bulletin2009，58，6： | 1 |
| 11 | Impactandmanagementofskintoxicityassociatedwithanti-epidermalgrowthfactorreceptortherapy:Surveyresults显示文摘 | BooneSL RademakerA LiuD etal | 2007 | Oncology2007，72，3： | 1 |
| 12 | 显示文摘 | Wang Liuding Zhou Junqiang Cao Quanxi | 2003 | J Mater Sci Technol2003，19，4： | 1 |
| 13 | From autonomy to creativity:A multilevel investigation of the mediating role of harmonious passion显示文摘 | LiuD | 2011 | Journal of Ap-plied Psychology2011，96，2： | 1 |
| 14 | The genome of the cucumber显示文摘 | HUANG S LI R ZHANG Z LI L GU X FAN W LUCAS W J WANG X XIE B NI P REN Y ZHU H LI J LIN K JIN W FEI Z LI G STAUB J KILIAN A VAN DER VOSSEN EA WUY GUO J HE J JIA Z REN Y TIAN G LU Y RUAN J QIANW WANG M HUANG Q LI B XUAN Z CAO J ASAN WUZ ZHANG J CAI Q BAI Y ZHAO B HAN Y LI Y LI X WANG S SHI Q LIU S CHO WK KIM JY XU Y HELLER-USZYNSKA K MIAO H CHENG Z ZHANG S WU J YANG Y KANG H LI M LIANG H REN X SHI Z WEN M JIAN M YANG H ZHANG G YANG Z CHEN R LIU S LI J MA L LIU H ZHOU Y ZHAO J FANG X LI G FANG L LI Y LIUD ZHENG H ZHANG Y QIN N LI Z YANG G YANG S BOLUND L KRISTIANSEN K ZHENG H LI S ZHANG X YANG H WANG J SUN R ZHANG B JIANG S WANG J DUY LI S | 2009 | Cucumis Sativus L NatureGenetics2009，41，： | 1 |
| 15 | SecretedmonocyticmiR-150enhancestargetedendothelialcellmigration显示文摘 | ZhangY LiuD ChenX etal | 2010 | MolCell2010，39，1： | 1 |
| 16 | Signaling pathways involved in endo-plasmic reticulum stress - induced neuronal apoptosis显示文摘 | LiuD Zhang M Yin H | 2013 | IntJ Neurosci2013，123，3： | 1 |
| 17 | GSK3 beta overexpression indicates poor prognosis and its inhibition reduces cell proliferation and survival of non- small cell lung cancer cells 显示文摘 | Zeng J LiuD Qiu Z | 2014 | PLoS One2014，9，91： | 1 |
| 18 | MorphologyofPenicilliummarneffeiunderoxidativestressinvitro显示文摘 | LiuD LiangL LuoQ etal | 2011 | Mycoses2011，54，2： | 1 |
| 19 | Detection of trichinosis using TSM immunosensor显示文摘 | Fengjiao He Liude Zhang Hongling Liu | 2001 | Talanta2001，，4： | 1 |
| 20 | DioxythiopheneGbasedpolymerelectrodesforsupercapacitormodules显示文摘 | LiuD Y ReynoldsJR | 2010 | ACSApplideMaterialsandInterfaces2010，2，12： | 1 |
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