| Characteristics of complicated AISI316L automobile components manufactured by powder/metallurgy
L. Zhong Liang
The Journal of Mechanical Science and Technology, vol. 23, no. 7, pp.1924-1931, 2009
Abstract : Indirect Selective Laser Sintering/ Isostatic Pressing (SLS/IP), with Cold Isostatic Pressing (CIPing) and Hot
Isostatic Pressing (HIPing) IPs, is adopted for the manufacture of complicated automobile components. The preparation
of PA12-coated AISI316L powder and airproof plastic canning during CIPing are also investigated. The influence of
technology parameters on the performances of AISI316L specimens during SLS/IP is likewise analyzed. Results show
that PA12-coated AISI316L powders are successfully prepared through the dissolution and precipitation process, and
that it is better to fabricate airproof canning for complicated components with natural latex. After sintering AISI316L
specimens from 1300℃ to 1340℃ (CIPed at more than 300 MPa ahead), their relative densities increased, approaching
92%. Subsequently, their relative densities are improved by HIPing, whose optimal pressure and temperature parameters
are between 90 MPa and 20 MPa, and 1150℃ and 1250℃, respectively. The optimal tensile performances
are close to those of annealed AISI316L compact materials.
Keyword : Automobile components; Powder metallurgy; AISI316L stainless steel; Tensile performance |
