Quick Search:       Advanced Search
周伟.一种新型高强钛合金热处理过程中的初生相形态演变和力学性能的研究[J].稀有金属材料与工程(英文),2017,46(10):2852~2856.[Zhou Wei.The evolution of primary α phase morphology and mechanical properties of a new high-strength titanium alloy during heat treatment[J].Rare Metal Materials and Engineering,2017,46(10):2852~2856.]
The evolution of primary α phase morphology and mechanical properties of a new high-strength titanium alloy during heat treatment
Download Pdf  View/Add Comment  Download reader
Received:July 26, 2016  Revised:September 20, 2016
DOI:
Key words: heat treatment, titanium alloy,primary α phase,mechanical properties
Foundation item:国家自然科学基金项目(面上项目,重点项目,重大项目);国家科技攻关计划
Author NameAffiliation
Zhou Wei  
Hits: 8
Download times: 6
Abstract:
      The evolution of primary α phase morphology and mechanical properties of a new high-strength titanium alloy during heat treatment were investigated. The results show that the primary α phases tend to globular growth feature on the basis of the equiaxed α phases underα/β zone double solution treatment at air cooling process. But abnormal growth of primary α grains occurs in the 0.5℃/minfurnace cooling processwhich except some primary alpha remains spherical growth, another parts evolve similar “fork” shapeddendritic growth rather than keep nearly spherical growth trend. The new titanium alloy leads to attractive combinations of strength and ductility (≈1300MPa of ultimate strength with 10.5% of elongation) at the microstructures obtained a few equiaxed or thin billet-like primary α phase and fine lamellar secondary α phase under α/β solution treatment followed by air cooling plus aging.The new alloyafter α/β solution treatment followed furnace cooling to low temperature and then aging heat treatment process has an excellent values (≥80 MPa?m1/2). Meanwhile, the elongation and reduction ofarea remain at about 19% and 45% respectively, and its corresponding tensile strength maintains at about1000 MPa.It can be assumed that the alloy may be a usable structural material.
$(".lightbox").lightbox ({fitToScreen:!0,imageClickClose:! 1,fileLoadingImage:"http://p0.qhimg.com/t014f18305c97360131.gif",fileBottomNavClose Image:"http://p0.qhimg.com/t0155d6ba22d11cc3ea.png",overlayOpacity:.7,navbarOnTop:! 0})