کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7210247 | 1469203 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evolution of Primary α Phase Morphology and Mechanical Properties of a Novel High-Strength Titanium Alloy during Heat Treatment
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مکانیک مواد
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The evolution of primary α phase morphology and mechanical properties of a novel high-strength titanium alloy during heat treatment were investigated. The results show that the primary α phases exhibit a globular growth feature on the basis of the equiaxed α phases under double solution treatment at air cooling process of α/β zone. But abnormal growth of primary α grains occurs in the 0.5 °C/min furnace cooling process except that some primary α remains spherical growth, i.e. the other part of α grains evolve into similar “fork” shaped dendritic growth rather than keeping nearly spherical growth trend. The novel titanium alloy has attractive combinations of strength and ductility (â1300MPa of ultimate strength with 10.5% of elongation) owing to the microstructures of equiaxed or thin billet-like primary α phase and fine needle-like secondary α phase after α/β solution treatment followed by air cooling plus aging. After α/β solution treatment followed by furnace cooling to low temperature and then aging heat treatment, the new type alloy has an excellent fracture toughness (â¥80 MPa·m1/2), and the elongation and reduction of area remain at about 19% and 45%, respectively, and its corresponding tensile strength is maintained at about 1000 MPa. It can be assumed that the alloy may be a usable structural material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Rare Metal Materials and Engineering - Volume 46, Issue 10, October 2017, Pages 2852-2856
Journal: Rare Metal Materials and Engineering - Volume 46, Issue 10, October 2017, Pages 2852-2856
نویسندگان
Zhou Wei, Ge Peng, Zhao Yongqing, Xin Shewei, Li Qian, Chen Jun, Zhang Siyuan, Huang Chaowen,