Microstructure and Mechanical Properties of Joints of Titanium with Stainless Steel Performed using Nickel Filler

Archives of Metallurgy and Materials

M. Konieczny¹  B. Szwed¹ 

[1] KIELCE UNIVERSITY OF TECHNOLOGY, FACULTY OF MECHATRONICS AND MECHANICAL ENGINEERING, DEPARTMENT OF APPLIED COMPUTER SCIENCE AND ARMAMENT ENGINEERING, KIELCE, POLAND

关键词: Keywords: diffusion brazing;    titanium;    stainless steel;    microstructure;    mechanical properties;   

DOI  :  10.1515/amm-2016-0170

学科分类：金属与冶金

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

Diffusion brazing was performed between titanium (Grade 2) and stainless steel (X5CrNi18-10) using as a filler a nickel foil at the temperatures of 850, 900, 950 and 1000°C. The microstructure was investigated using light microscopy and scanning electron microscopy equipped with an energy dispersive X-ray system (EDS). The structure of the joints on the titanium side was composed of the eutectoid mixture αTi+Ti2Ni and layers of intermetallic phases Ti2Ni, TiNi and TiNi3. The stainless steel-nickel interface is free from any reaction layer at 850°C, above this temperature thin layer of reaction appears. The microhardness measured across the joints reaches higher values than for titanium and stainless steel, and it achieves value from 260 to 446 HV. The highest shear strength (214 MPa) was achieved for joints brazed at 900°C.

【 授权许可】

Unknown