Hits:

Indexed by:期刊论文

Date of Publication:2016-06-01

Journal:OPTICS AND LASER TECHNOLOGY

Included Journals:SCIE、EI

Volume:80

Page Number:138-144

ISSN No.:0030-3992

Key Words:Direction laser fabrication; Oblique thin-walled part; AISI316L stainless steel; Properties

Abstract:Direct laser fabrication (DLF) developed from laser cladding and rapid prototyping technique has been widely used to fabricate thin-walled parts exhibiting more functions without expending weight and size. Oblique thin-walled parts accompanied with inhomogeneous mechanical properties are common in application. In the present study, a series of AISI316L stainless steel oblique thin-walled parts are successfully produced by DLF, in addition, deposition strategies, microstructure, and mechanical property of the oblique thin-walled parts are investigated. The results show that parallel deposition way is more valuable to fabricate oblique thin-walled part than oblique deposition way, because of the more remarkable properties. The hardness of high side initially increases until the distance to the substrate reaches about 25 mm, and then decreases with the increase of the deposition height. Oblique angle has a positive effect on the tensile property but a negative effect on microstructure, hardness and elongation due to the more tempering time. The maximum average ultimate tensile strength (UTS) and elongation are presented 7443 MPa and 13.5% when the angle between tensile loading direction and horizontal direction is 45 degrees and 90 degrees, respectively. (C) 2016 Elsevier Ltd. All rights reserved.