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| 1 | Microstructural Analysis of Ultrasonic Welded AA6061 by Electron Backscattered Diffraction显示文摘Ultrasonic welding can be used to join plastic and metal through high-frequency (more than 20 kHz) acoustic vibrations. Aluminium alloy is widely used in electronics, automotive and aerospace. The mechanical vibrations used during ultrasonic metal welding are introduced horizontally. During ultrasonic metal welding, a complex process is triggered involving static forces, oscillating shearing forces and a moderate temperature increase in the welding area. As the energy is introduced to the weld zone, there are three important phenomena occurring which are surface effect, volume effect and thermal effect. As it is known, microstructure is directly linked to the mechanical properties including fatigue resistance, fatigue life and fracture strength. So the microstructure analysis is important to evaluate the ultrasonically welded aluminium alloy’s properties. Also, mechanical properties of metal sheets, such as plastic anisotropy and formability, can be improved by a proper crystallographic texture control. That means the texture has great influence on the plastic anisotropy of the final recrystallized sheets. Optical microscopy (OM) can be used for showing the grain size and grain shape. However, to examine the relationship between mechanical behaviour and microstructure of the weldment, optical microscopy(OM) is not sufficient. OM cannot delineate a grain structure in the weld zone. The etched surface exhibited granularity at the micron level, but it was not clear if that reflected the grain structure. Electron backscatter diffraction (EBSD) in an SEM has become the most widely used technique for determination of microtexture. In this research, high-resolution electron backscatter diffraction is used to study the effects of the vibration on the evolution of microstructure in AA6061. The orientation image maps (OIM), polar figures (PF), and orientation distribution functions (ODF) of the samples are obtained. The characteristics of the crystallographic orientation, the grain structure and the grain boundary are analysed to find the effect of ultrasonic vibration on the microstructure and texture of the bond. The ultrasonic vibration will lead to exceptional refinement of grains to a micron level along the bond area and affect the crystallographic orientation. The grain size of upper foil is much smaller than that of the lower foil. And ultrasonic vibration results in a very weak texture with some characteristic intensity of a rotated cube-orientation and the Brass-orientation and S-orientation. In the lower foil, there is no much influence of the ultrasonic vibration. So there is very strong cube orientation in the lower foil. | Zhu Z Wynne B P Ghassemieh E Siddiq A | 2009 | 稀有金属材料与工程2009，38，A03： | 2 |
| 2 | Characterizing associations and SNP-environment interactions for GWAS-identified prostate cancer risk markers-results from BPC3显示文摘 | LINDSTROM S SCHUMACHER F SIDDIQ A | 2011 | PLoS One2011，6，17： | 1 |
| 3 | Adiponectin gene polymorphisms and adiponectin levels are independently associated with the development of hyperglycemia during a 3-year period: the epidemiologic data on the insulin resistance syndrome prospective study 显示文摘 | Fumeron F Aubert R Siddiq A | 2004 | Diabetes2004，53，4： | 1 |
| 4 | Inter simple se- quence repeat (ISSR) polymorphism and its application in plant breeding显示文摘 | Pradeep Reddy M Sarla N Siddiq E A | 2002 | Euphytica2002，128，： | 1 |
| 5 | A synonymous coding polymorphism in the alpha2-Heremans-schmid glycoprotein gene is associated with type 2 diabetes in French Caucasians显示文摘 | Siddiq A Lepretre F Hercberg S | 2005 | Diabetes2005，54，8： | 1 |
| 6 | Inter simple sequence repeat (ISSR) polymorphism and its application in plant breeding显示文摘 | Reddy M P Sarla N Siddiq E A | 2002 | Euphytica2002，128，1： | 1 |
| 7 | Adiponectin genepoly- morphisms and adiponectin levels are independently associat- ed with the development of hyperglycemia durina 3-year peri- od:the epidemiologic data on the insulin resistance syndrome prospective study 显示文摘 | Fumeron F Aubert R Siddiq A | 2004 | Diabetes2004，53，4： | 1 |
| 8 | Inter simple sequence repeat(ISSR) polymorphism and its application in plant breeding 显示文摘 | Reddy M P Sarla N Siddiq E A | 2002 | Euphytica2002，128，1： | 1 |
| 9 | Comparative effects of metformin and pioglitazone on lipid profile of rabbits显示文摘 | Khan RA Baig SG Siddiq A | 2015 | Pak J Pharm Sci2015，28，2： | 1 |
| 10 | Thermomechanical analyses of ultrasonic welding process using thermal and acoustic softening effects显示文摘 | Siddiq A Ghassemieh E | 2008 | Mechanics of Materials2008，40，12： | 1 |
| 11 | Inter simple sequence repeat( IS- SR) polymorphism and its application in plant breeding显示文摘 | Reddy M P Sarla N Siddiq E A | 2002 | Eu- phytica2002，128，1： | 1 |
| 12 | A rapid technique for scent determi nation in rice显示文摘 | Sood B G Siddiq E A | 1978 | Plant Breed1978，38，： | 1 |
| 13 | A synonymous coding polymorphism in the alpha 2-Heremans-Schmid glycoprotein gene is associated with type 2 diabetes in French Caucasians显示文摘 | Siddiq A Lepretre F Hereberg S | | 0，，08： | 1 |
| 14 | Acetylenic anticancer agents显示文摘 | Siddiq A Dembitsky V | | 0，，： | 1 |
| 15 | Adiponectin gene poly morphisms and adiponectin levels are independently associated with the development of hyperglycemia during a 3-year period: the epidemiologic data on the insulin resistance syndrome prospective study显示文摘 | Fumeron F Aubert R Siddiq A | 2004 | Diabetes2004，53，： | 1 |
| 16 | 显示文摘 | Fumeron F Aubert R Siddiq A | 2004 | Diabetes2004，53，4： | 1 |
| 17 | Adiponectin gene polymorphisms and adiponectin levels are independently associated with the development of hyperglycemia during a 3 year period: the epidemiologic date on the insulin resistance syndrome prospective study显示文摘 | Fumeron F Aubert R Siddiq A | 2004 | Diabetes2004，53，4： | 1 |
| 18 | Genetic analysis of temperature sensitive male sterility in rice显示文摘 | REDDY O SIDDIQ E A SARMA N P | 2000 | Theor Appl Genet2000，100，： | 1 |
| 19 | A synonymous coding polymorphism in the 2-Heremans-Schmid glycoprotein gene is associated with type 2 diabetes in french caucasians显示文摘 | Siddiq A Lepretre F Hercberg S | 2005 | Diabetes2005，54，8： | 1 |
| 20 | Inhibition of prolyl hydroxylase protects against 1-methyl-4-phenyl- 1,2,3,6-tetrahydropyridine-induced neurotoxicity: model for the potential involvement of the hypoxia-inducible factor pathway in Parkinson disease 显示文摘 | LEE D W RAJAGOPALAN S SIDDIQ A | 2009 | J Biol Chem2009，284，29： | 1 |
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