Dissertation > Excellent graduate degree dissertation topics show

Effect of Rolling Process on Fatigue Behavior of TC4-DT Alloy Sheets

Author: ZuoHai
Tutor: YangGuanJun；MaoXiaoNan
School: Xi'an University of Architecture and Technology
Course: Materials processing
Keywords: TC4-DT alloy Rolling Heat treatment Mechanical properties High cycle fatigue behavior
CLC: TG115
Type: Master's thesis
Year: 2011
Downloads: 42
Quote: 0
Read: Download Dissertation

Abstract


The effect of rolling process and heat treatment on microstructures and mechanical properties of TC4-DT sheets was systematically investigated by means of optical microscope observation, mechanical property test and scanning electric microscope fractography analysis. The relationship among different kinds of microstructures and properties were analyzed.It was found that bimodal microstructure by solution and ageing treating exhibits higher strength and ductility. The primaryα-phase decreases, strength increases and ductility decreased with the solution temperature increasing when the TC4-DT alloy is heat treated in the two phase region. In addition, the faster the cooling rate, the moreα’ phase will be obtained, and the strengthening effect will be increased. With the increase of aging temperature and time, the amount of secondaryα-phase increases and size becomes coarse, the yield strength increases up to the peak and then decreases, but the ductility has a little change. The best heat treatment system is 955℃/1h AC +550℃/8h AC, and the specimen will get a better mechanical properties under the heat treatment.Texture was found in the TC4-DT sheets without cross rolling by X-ray diffraction analysis. The diffraction peaks of (002),(101)and(103)were significantly different from the card. The texture can be reduced by cross rolling. The result of the fatigue test shows that dispersion of the high cycle fatigue behavior of TC4-DT sheets can be improved by cross rolling.

Related Dissertations

  1. Fabricationand Properties of SiC-AlN Multiphase Ceramics Prepared by Gelcasting,TQ174.62
  2. Research on Mechanical Properties of Concrete with Multi-Component Admixture,TU528
  3. Study on the Subsurface Crack of Supporting Roller Made of Austempered Ductile Iron,TG156.3
  4. Research on Reversible Single Stand 4-high Cold Rolling Mill Gauge Control System,TG334.9
  5. The Study on Relationship between Drape Aesthetic Perception and Property of Mechanics,TS101.923
  6. Virtual fitting skirt semicircle shape SVM Classification Based on fabric,TS941.4
  7. Analysis and Research on Organizational Field and Mechanical Properties of Hot-rolled H-beam in the Controlled Cooling Process,TG335
  8. Study on Microstructure Stability and Dynamic Recrystallization of GH80A Alloy Used for Steam Turbine,TG132.32
  9. The Study Application of Induction Heat Treating Technology for Thick Walled Pipe,TM924
  10. Study on RT-PCR Detection and Elimination Technique of Citrus Tatter Leaf Disease,S436.66
  11. The Research on Mechanical Properties of CFRP Plate Reinforcing Steel,TU391
  12. The Research on Experiment and Theoretical Analysis of Insulation Composite Wallboard,TU551
  13. The Cleaning Performance Simulation and Optimization of Rear Rolling Drum-Type Sweeper,U469.691
  14. Research on Process and Hot Rolling Technology of Polyester Spunbond Nonwoven for Dried Flower,TS176
  15. Research on Structure and Mechanical Property of Hook and Loop Fastener,TE931.2
  16. The Study of Forming Process and Properties of PTT/PET Skin-Core Composite Monofilament with Large Diameter,TQ340.64
  17. Study on the Spinnability of Semi-Aromatic Polyamide,TQ340.1
  18. Preperation of Low Friction and Wear Resistant High-Purity Alumina Ceramic,TQ174.1
  19. Study on Process Method and Parameter Optimization of the Remained-heat Treatment of Marine Heavy Forgings,TG316
  20. Based on Neural Network Model of Hot-rolling,TP183
  21. Preparation of Surface-functionalized Graphene and Its Influence on the Mechanical Properties of Nanocomposite Materials,TB332

CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > Metallurgy ( Physical Metallurgy ) > Analytical tests of the metal (Metal Testing and Materials )
© 2012 www.DissertationTopic.Net  Mobile