摘要
将0.14 mm厚PtTi0.5Zr0.2合金片和0.08 mm厚Ti片依次叠放,经850℃/2 h真空热压烧结后,分别采用冷轧和热轧工艺制备PtTi0.5Zr0.2/Ti微叠层复合材料。研究了轧制工艺对微叠层复合材料微观组织及力学性能的影响。结果表明:在850℃热压烧结2 h,叠层复合材料界面形成冶金结合,并有少量Ti_(3)Pt金属间化合物形成;采用冷轧工艺,单道次变形量为10%~15%,累积变形量至50%后进行500℃/1 h中间退火,然后继续冷轧直至复合坯厚度至0.2 mm、总变形量超过90%,由此得到的PtTi0.5Zr0.2/Ti微叠层复合材料的层间距为20~30μm,且各叠层保持连续,厚度均匀,平行度好;PtTi0.5Zr0.2/Ti微叠层复合材料抗拉强度为657 MPa,延伸率达9.46%。
The 0.14 mm thick PtTi0.5 Zr0.2 alloy sheet and the 0.08 mm thick Ti sheet were stacked in sequence. After sintering at 850 ℃ for 2 h under vacuum hot pressing, the PtTi0.5 Zr0.2/Ti micro-laminated composite was prepared respectively by cold rolling and hot rolling. The microstructure and mechanical properties of the micro-laminated composites were evaluated.The results show that when hot pressing at 850 ℃ for 2 h, metallurgical bonding is formed at the interface of the composite, and a small amount of Ti_(3)Pt intermetallic compound is also formed. The PtTi0.5 Zr0.2/Ti micro-laminated composite is produced by cold rolling with 10%~15% single pass deformation, and when the deformation is accumulated to 50%,the intermediate annealing is carried out at 500 ℃ for 1 h. Finally, the total deformation exceeds 90% and the thickness of composite billet is rolled to 0.2 mm. The layer of PtTi0.5 Zr0.2/Ti micro-laminated composite with the layer spacing of 20~30 μm is continuous. Besides, each layer also has uniform thickness and good parallelism. The tensile strength of PtTi0.5 Zr0.2/Ti micro-laminated composite is 657 MPa and the elongation is 9.46%.
作者
范晔
杨娟
孟志军
马小龙
Fan Ye;Yang Juan;Meng Zhijun;Ma Xiaolong(Xi’an Nobel Rare Metal Materials Co.,Ltd.,Xi’an 710065,China)
出处
《钛工业进展》
CAS
2021年第5期27-30,共4页
Titanium Industry Progress
基金
国家自然科学基金项目(51164034)。
关键词
热压烧结
轧制
微叠层材料
力学性能
hot press sintering
rolling
micro-laminated composite
mechanical properties
