Dissertation > Excellent graduate degree dissertation topics show

Mechanical Behaviors of Zr-based and Ti-based Amorphous Alloys

Author: ZhangJunHeng
Tutor: LiFuShan
School: Zhengzhou University
Course: Materials Processing Engineering
Keywords: Bulk metallic amorphous alloy Biomaterials Mechanical properties Three-point bending Creep Stress relaxation
CLC: TG139.8
Type: Master's thesis
Year: 2011
Downloads: 48
Quote: 0
Read: Download Dissertation

Abstract


Amorphous alloy is the alloy melt obtained by rapid cooling of a long-range disordered alloy having high strength and elastic limit, etc., the crystal structure of different materials, a new hot material research. With further in-depth study of its structure and properties of amorphous alloys start applying to the production and life. However, the toughness of amorphous alloys is poor, which largely reduces its field of application. Based on the pre-load and amorphous alloy annealed to study the effect of Zr-based amorphous alloy structure and force of impact. And clinical use of biological material for comparison and analysis TI-based amorphous alloy mechanical properties of features. (1) Zr-based amorphous alloy is relatively good overall performance and relatively high formability of the alloy composition: Zr65Cu15Ni10Al10, by first pre-loading of the alloy, and then measuring compressive strength and toughness, combined with the side surface and cross section of the alloy for electronic scanning (SEM), from the force of the test data and analytical power of microstructure variation. Before and after contrast preload changes of mechanical properties of amorphous alloy, summed up the pre-loaded on the alloy structure and force effects. In addition, after annealing at different temperatures and times, and then mechanical testing, combined with the characteristics of the microstructure, annealing the amorphous structure and the sum of the impact forces. Found that: there is a certain amorphous annealing effect threshold value before and after the amorphous structure and mechanical properties more obvious changes. The study found that the amorphous relaxation increased strength, the corresponding variable is decreased, the elastic modulus increases slightly. Residual stresses can be a good fit for digital. Stress relaxation, resulting in uneven division amorphous stress, structural characteristics differentiation. Impact of annealing on amorphous temperature threshold of Tk exist, with the annealing temperature, the amorphous alloy structure significantly non-linear changes. In this paper, Zr-based amorphous and annealing effect by preloading the structure and mechanical properties after analysis of the changes, for the expansion of the use of amorphous areas of great practical significance, both for the study of amorphous, especially to improve the non-ductile study provides a new research perspective. (2) Ti-based amorphous component 1 # Ti-Zr-Cu-Pd, 2 # Ti-Zr-Cu-Pd-Si. Its mechanics, through to the mechanical determination of amorphous explore Ti-based amorphous alloy as a biological material (such as dental materials) possibilities. Article in a simulated external force such as bending and teeth by chewing action at different rates based on the compressive strength, bending strength and toughness of the amorphous test and fixed rate and variable rate compression measurement. Compared with conventional biological materials, biological materials of amorphous material as the advantages and mechanical properties of the associated control elements, combined with the macro and micro structure to analyze the performance of the mechanism of formation. Ti-based amorphous compared with the commonly used biomaterials, have obvious advantages strength, elastic modulus equivalent toughness is poor. Flexural strength, brittleness overall appearance features. Compression rate, on the mechanical properties of amorphous obvious. This research breakthrough of the traditional biological material mostly crystalline alloys based situation, expanding the field of biological material selection, as well as amorphous materials research to improve the use value.

Related Dissertations

  1. Reactive Hot-Pressing and Mechanical Properties of （ZrB2-ZrO2）/BN Composites,TB332
  2. Research on Welding Characteristics of CO2 Laser-GMA Hybrid Welding for Ultra-Low Carbon Bainitic Steel,TG456.7
  3. Microstructure and Mechanical Properties of Mg-Zn-Y-Zr Alloys,TG146.22
  4. A Study on Thermal-Mechanical Damage Behaviour of 60Si2Mn Steel,TG142.15
  5. Study on the Recycling of Post-Consumer Polyester Textiles,X791
  6. Fabricationand Properties of SiC-AlN Multiphase Ceramics Prepared by Gelcasting,TQ174.62
  7. Synthesis of Polysulfones and Modification for Epoxy Adhesives,TQ433.437
  8. The Study on the Creep Resistance Property of Ultra-High Molecular Weight Polyethylene Fiber,TQ342.61
  9. The application of nanotechnology in the field of anti - coagulation of biological materials,R318.08
  10. The Research of Concrete Shrinkage and Creep Experiment,TU528
  11. Chitosan / tricalcium phosphate scaffold for tissue engineering Preparation and Properties,R318.08
  12. Structure and Characterization of Room Temperature Self-crosslinked Acrylonitrile-butadiene-styrene,TQ325.2
  13. The Research on Extrusion Parameters Through the Plate Billet of Magnesium Alloy,TG379
  14. Research on Adaptive Inverse Control for the Hysteresis and Creep Characteristics of IPMC,TP273.2
  15. Modification of Talc Powder and Its Reinforcing and Toughening on Recycled Polypropylene,TQ325.14
  16. Effect of Adding ZrO 2 Nanopowder on Microstructure and Mechanical Properties of Carbon Steel,TB383.1
  17. Preparation of Surface-functionalized Graphene and Its Influence on the Mechanical Properties of Nanocomposite Materials,TB332
  18. Numerical Analysis Method and Application for Creep Damage of Asphalt Mixture,O346.1
  19. Preperation of Low Friction and Wear Resistant High-Purity Alumina Ceramic,TQ174.1
  20. The Study of Forming Process and Properties of PTT/PET Skin-Core Composite Monofilament with Large Diameter,TQ340.64
  21. Research on Structure and Mechanical Property of Hook and Loop Fastener,TE931.2

CLC: > Industrial Technology > Metallurgy and Metal Craft > Metallurgy and Heat Treatment > The alloy learn with a variety of properties of alloys > Other special nature of the alloy > Amorphous alloy
© 2012 www.DissertationTopic.Net  Mobile