Co‐Spray Forming of Gradient Deposits from Two Sprays of Different Tool Steels Using Scanning Gas Atomizers. Issue 11 (26th July 2013)

• Record Type: Journal Article
• Authors: Cui, Chengsong; Schulz, Alwin; Uhlenwinkel, Volker
• Is Part Of: Steel research international. Volume 84:Issue 11(2013:Nov.)
• Page Start: 1075
• Page End: 1084
• Publication Date: 2013-07-26
• Subjects: gradient deposit -- process development -- spray forming -- tool steel; Steel -- Periodicals; Steel -- Metallurgy -- Periodicals; 669.142
• DOI: 10.1002/srin.201200266
• Languages: English
• ISSNs: 1611-3683

Abstract

Abstract: A co‐spray forming process was developed to produce gradient deposits from two sprays of different tool steels using scanning gas atomizers. The tool steel melts were atomized and co‐sprayed simultaneously onto a horizontally moving flat substrate, resulting in a flat deposit with a gradient zone between two layers of the different steels when the two sprays were overlapped. The gradient deposits were investigated with respect to the porosity, element distributions, microstructure, and hardness. It showed that a sound deposit with a desired gradient zone could be achieved under proper processing conditions. Abstract : This paper describes a newly developed spray forming process for the manufacture of graded materials. In this process, two different tool steels are atomized simultaneously and co‐sprayed on a flat substrate, resulting in a flat graded deposit when the two sprays are overlapped. By the use of the new co‐spray forming process, different microstructures and properties can be combined in a single deposit.