Optimisation of precipitation hardening for 15-5 PH martensitic stainless steelproduced by wire arc directed energy deposition

Aljaž Ščetinec (Author), Damjan Klobčar (Author), Aleš Nagode (Author), Tomaž Vuherer (Author), Drago Bračun (Author), Uroš Trdan (Author)

Abstract

This paper discusses directed energy deposition of 15-5 PH, which was successfully tailored with precipitation hardening (PH) to achieve the desired properties. Parametric analysis of solution annealing and aging at various time and temperature combinations was performed. Material characterisation was done in the as-deposited, solution annealed, and PH states. Investigations included microscopy, SEM/EDS, fractography, hardness, tensile, and impact toughness test. The as-deposited microstructure was composed of martensite laths along with delta ferrite. Optimisation of solution annealing was mandatory to achieve homogeneous austenite, which allowed PH. PH resulted in similar properties compared to conventionally produced steel. Peak aging resulted in 450 HV10 and an Rm of 1350 MPa, while the over-aged condition resulted in an impact toughness of over 77 J/cm2.

Keywords

oblikovno obločno navarjanje z žico;15-5 PH;raztopno žarjenje;staranje;izločevalno utrjevanje;martenzitno nerjavno jeklo;karakterizacija materiala;wire arc additive manufacturing;solution annealing;aging;precipitation hardening;martensitic stainless steel;material characterisation;

Data

Language:	English
Year of publishing:	2023
Typology:	1.01 - Original Scientific Article
Organization:	UL FS - Faculty of Mechanical Engineering
UDC:	621.791.75
COBISS:	150180355
ISSN:	1362-1718
Views:	25
Downloads:	6
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	oblikovno obločno navarjanje z žico;15-5 PH;raztopno žarjenje;staranje;izločevalno utrjevanje;martenzitno nerjavno jeklo;karakterizacija materiala;
Type (COBISS):	Article
Pages:	str. [1-11]
Chronology:	Apr. 2023
DOI:	10.1080/13621718.2023.2202979
ID:	19757433