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ASTM Selected Technical Papers
Bearing and Transmission Steels Technology
Editor
John Beswick
John Beswick
Symposium Chair and STP Editor
1Montfoort,
SE
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ISBN:
978-0-8031-7745-1
No. of Pages:
558
Publisher:
ASTM International
Publication date:
2024

The trends in the aerospace market of reducing fuel consumption and polluting emissions create the need to reduce the weight of mechanical components: for example, a reduction in bearing ring weight means that the ring steel must withstand greater loads. To significantly increase load-carrying ability, powder metallurgy (PM) steels have been considered in recent years as a consistent solution. At the last ASTM congresses, ASP2055, a PM steel presenting an interesting hardness-toughness compromise, was presented. In 2016, the potential of this steel for aerospace applications was demonstrated by a thorough analysis of the inclusion cleanliness and matrix mechanical properties regarding the subsurface performance. In 2019, the reliability of the process and properties regarding performance were discussed. This paper presents the readiness level increase in terms of both manufacturing and application performance. Since 2016, extensive work has been done at NTN Europe to qualify and quantify the performance of ASP2055 in rings for all-metal and hybrid aerospace bearings. The subsurface rolling contact fatigue (RCF) performance was already qualified in terms of inclusion cleanliness and matrix intrinsic mechanical properties. Additional tests were carried out under high load to confirm the high reliability of PM steelmaking. Rolling bearings of small size were manufactured to test the performance of ASP2055 in representative conditions and to test ASP2055 for other bearing functions (surface RCF and core properties). More recently, real-size turbine engine bearings were manufactured for representative manufacturing and testing. The lessons learned for the technology readiness level (TRL) and manufacturing readiness level (MRL) increase are presented in this paper.

1.
Pearson
P. K.
, “
The History and Future of Aircraft Turbine Engine Bearing Steels
,” in
Bearing Steels: Into the 21st Century
, ed.
Hoo
J. J.
C.
and
Green
W. B.
(
West Conshohocken, PA
:
ASTM International
,
1998
), 335–353,
2.
Girodin
D.
, “
Deep Nitrided 32CrMoV13 Steel for Aerospace Bearings Applications
,”
NTN Technical Review
76
(
2008
): 24–31.
3.
Vincent
A.
,
Nelias
D.
,
Jacq
C.
,
Robin
Y.
, and
Dudragne
G.
, “
Comparison of Fatigue Performances of 32CrMoV13 and M50 Steels in Presence of Surface Indents
,” in
Bearing Steel Technology—Advances and State of the Art in Bearing Steel Quality Assurance: 7th Volume
, ed.
Beswick
J. M.
(
West Conshohocken, PA
:
ASTM International
,
2007
), 187–197,
4.
Pearson
P.
and
Dickinson
T.
, “
The Role of Carbides in Performance of High-Alloy Bearing Steels
,” in
Effect of Steel Manufacturing Processes on the Quality of Bearing Steels
, ed.
Hoo
J. J.
C.
(
West Conshohocken, PA
:
ASTM International
,
1988
), 113–131,
5.
Brown
P.
and
Potts
J.
, Evaluation of Powder Processed Turbine Engine Ball Bearings, Interim Report AFAPL-TR-77-26 (Dayton, OH:
Air Force Aero-Propulsion Laboratory, Wright-Patterson Air Force Base
,
1977
).
6.
Schulze
D. R.
,
Jones
H. F.
, and
Sherrill
R. D.
, Evaluation of Powder Processed Turbine Engine Ball Bearings, Final Report AFWAL-TR-80-2110 (Dayton, OH:
Air Force Aero-Propulsion Laboratory, Wright-Patterson Air Force Base
,
1980
).
7.
Brown
P. F.
,
Bogardus
G. A.
,
Dayton
R. D.
, and
Schulze
D. R.
, “
Evaluation of Powder-Processed Metals for Turbine Engine Ball Bearings
,” in
Rolling Contact Fatigue Testing of Bearing Steels
, ed.
Hoo
J. J.
C.
(
West Conshohocken, PA
:
ASTM International
,
1982
), 323–341,
8.
Hampshire
J. M.
,
Nash
J. V.
, and
Hollox
G. E.
, “
Materials Evaluation by Flat Washer Testing
,” in
Rolling Contact Fatigue Testing of Bearing Steels
, ed.
Hoo
J. J.
C.
(
West Conshohocken, PA
:
ASTM International
,
1982
), 46–66,
9.
Popgoshev
D.
and
Valori
R.
, “
Rolling Contact Fatigue Evaluation of Advanced Bearing Steels
,” in
Rolling Contact Fatigue Testing of Bearing Steels
, ed.
Hoo
J. J.
C.
(
West Conshohocken, PA
:
ASTM International
,
1982
), 342–357,
10.
Bienvenu
Y.
,
Fontaine
L.
,
Wright
C. S.
,
Wronski
A. S.
,
Girodin
D.
,
Kinder
J.
,
Faral
O.
, et al
, “
Study of PM Processing Routes for T1 and M50 High Speed Steels for Aeroengine Bearing Applications
” (paper presentation, Powder Materials in Transportation, 1991 Powder Metallurgy Group Meeting,
York, UK
, October 21–23,
1991
).
11.
Wright
C. S.
,
Wronski
A. S.
,
Bienvenu
Y.
,
Fontaine
L.
,
Girodin
D.
,
Kinder
J.
,
Faral
O.
, et al
, “
Development of Powder Processing Routes for the Production of Mainline Bearings for Aero-Gas Turbine Engines
,”
Key Engineering Materials
72–74
(
1992
): 279–286.
12.
Tsubota
K.
, “
Evaluation of Bearing Steels Produced by Powder Metallurgy Process
,” in
Creative Use of Bearing Steels
, ed.
Hoo
J. J.
C.
(
West Conshohocken, PA
:
ASTM International
,
1993
), 95–105,
13.
Pearson
P. K.
,
Moll
J. H.
,
Hannigan
C. J.
, and
Atwell
D. R.
, “
Evaluation of P/M Tool Steels for Bearing Applications
,” in
Advances in Powder Metallurgy and Particulate Materials, 1994: Proceedings of the 1994 International Conference and Exhibition on Powder Metallurgy and Particulate Materials
(
Princeton, NJ
:
Metal Powder Industries Federation
,
1994
), 155–163.
14.
Park
W.
,
Hilton
M. R.
,
Leveille
A. R.
, and
Ward
P. C.
, “
Microstructure, Fatigue Life and Load Capacity of PM Tool Steel REX20 for Bearing Applications
,”
Tribology and Lubrication Technology
55
, no.
6
(
1999
): 20–30.
15.
Kajinic
A.
,
Dixon
R. B.
, and
Hann
B. A.
, “
Wear and Corrosion Resistant PM Tool Steels for Advanced Bearing Applications
,” in
Bearing Steel Technology
, ed.
Beswick
J. M.
(
West Conshohocken, PA
:
ASTM International
,
2002
), 349–361,
16.
Sandberg
F.
,
Olofsson
J.
,
Rébois
D.
, and
Sundin
S.
, “
High Integrity Powder Metallurgy for Demanding Bearing Applications
,” in
Bearing Steel Technologies: 10th Volume, Advances in Steel Technologies for Rolling Bearings
, ed.
Beswick
J. M.
(
West Conshohocken, PA
:
ASTM International
,
2015
), 349–368,
17.
Guetard
G.
,
André
J.
,
Bellus
J.
,
Sherif
M. Y.
, and
Rivera-Diaz-del-Castillo
P.
, “
In-Depth Comparison of Powder and Ingot Metallurgical M50 Bearing Steels
,” in
Bearing Steel Technologies: 11th Volume, Advances in Steel Technologies for Rolling Bearings
, ed.
Beswick
J. M.
(
West Conshohocken, PA
:
ASTM International
,
2017
), 75–91,
18.
Allison
B.
,
Coudert
J. B.
,
Guétard
G.
,
Mondelin
A.
,
Vermoere
R.
,
André
J.
,
Bellus
J.
, et al
, “
New Class of High-Speed Steels for Aero Rolling Bearings
,” in
Bearing Steel Technologies: 11th Volume, Advances in Steel Technologies for Rolling Bearings
, ed.
Beswick
J. M.
(
West Conshohocken, PA
:
ASTM International
,
2017
) 260–274,
19.
Sidoroff
C.
,
Lefort
E.
,
Dierickx
P.
,
André
J.
, and
Benbahmed
A.
, “
Subsurface Rolling Contact Fatigue of Powder Metallurgy Steels for Aerospace Bearings
,” in
Bearing Steel Technologies: 11th Volume, Advances in Steel Technologies for Rolling Bearings
, ed.
Beswick
J. M.
(
West Conshohocken, PA
:
ASTM International
,
2017
), 224–259,
20.
Steel, Bars, Wire, and Forgings 10.5Mo–6W–3.75Cr–2V (1.25–1.40C) Powder Metallurgy Product Hot Isostatically Pressed
, AMS6558 (
Warrendale, PA
:
SAE International
,
2013
).
21.
Steel Bars, Wire and Forgings 10Co–7Mo–6V–6W–4Cr (2.2–2.4C) Premium Aircraft-Quality for Bearing Applications Inert Gas Atomized and Hot Isostatically Pressed Consolidated
, AMS6560 (
Warrendale, PA
:
SAE International
,
2013
).
22.
Metallic Materials—Charpy Pendulum Impact Test—Part 1: Test Method
, ISO 148-1:2016 (
Geneva, Switzerland
:
International Organization for Standardization
,
2016
).
23.
Bellus
J.
,
Sidoroff-Coicaud
C.
,
Sehlstedt
V.
,
Benbahmed
A.
,
André
J.
, and
Blanchin
O.
, “
Performance and Reliability of Powder Metallurgy Steels for Aerospace Bearings
,” in
Bearing Steel Technologies: 12th Volume, Progress in Bearing Steel Metallurgical Testing and Quality Assurance
, ed.
Beswick
J. M.
(
West Conshohocken, PA
:
ASTM International
,
2020
), 332–351,
24.
Space Systems—Definition of the Technology Readiness Levels (TRLs) and Their Criteria of Assessment
, ISO 16290:2013 (
Geneva, Switzerland
:
International Organization for Standardization
,
2013
).
25.
Manufacturing Readiness Level (MRL) Deskbook
, Version 2.0, OSD Manufacturing Technology Program in collaboration with the Joint Service/Industry MRL Working Group,
2020
, https://web.archive.org/web/20230626190744/https://www.dodmrl.com/MRL%20Deskbook%20V2020.pdf
26.
Sidoroff
C.
,
Girodin
D.
,
Dierickx
P.
, and
Dudragne
G.
, “
Rolling Contact Fatigue Evaluation of Materials Using the NTN-SNR FB2 Test Rig—A Useful Piece of Equipment for the Qualification of Steels and Steelmakers and for Research
,” in
Bearing Steel Technologies: 9th Volume, Advances in Rolling Contact Fatigue Strength Testing and Related Substitute Technologies
, ed.
Beswick
J. M.
(
West Conshohocken, PA
:
ASTM International
,
2012
), 117–161,
27.
Steel—Determination of Content of Non-Metallic Inclusions—Micrographic Method Using Standard Diagrams
, ISO 4967:2013 (
Geneva, Switzerland
:
International Organization for Standardization
,
2013
), 1–39.
28.
Robitaille
C.
, “
Etude de la Fatigue des Roulements Hybrides en Condutions de Fonctionnement Aggravées
” (PhD thesis,
INSA Lyon
,
2016
).
29.
Dezzani
M. M.
and
Pearson
P. K.
, “
Hybrid Ceramic Bearings for Difficult Applications
,”
Journal of Engineering for Gas Turbines and Power
118
, no.
2
(
1996
): 449–452.
30.
Streit
E.
and
Trojahn
W.
, “
Duplex Hardening for Aerospace Bearing Steels
,” in
Bearing Steel Technology
, ed.
Beswick
J. M.
(
West Conshohocken, PA
:
ASTM International
,
2002
), 386–398,
31.
Yagita
K.
and
Ohki
C.
, “
Plasma Nitriding of High Alloy Steel for Bearing Components
,”
NTN Technical Review
78
(
2010
): 33–40.
32.
Méheux
M.
, “
Influence des Additifs de Lubrification sur le Formation des Tribofilms, le Coefficient de Frottement et le Durée de vie en Fatigue des Toulements
” (PhD thesis,
INSA Lyon
,
2009
).
33.
Chiu
Y. P.
,
Pearson
P. K.
, and
Dezzani
M.
, “
Fatigue Life and Performance Testing of Hybrid Ceramic Ball Bearings
,”
Lubrication Engineering
52
, no.
3
(
1996
): 198–204.
34.
Wan
G. T.
Y.
,
Gabelli
A.
, and
Ioannides
E.
, “
Increased Performance of Hybrid Bearings with Silicon Nitride Balls
,”
Tribology Transactions
40
, no.
4
(
1997
): 701–707.
35.
Vieillard
C.
,
Kadin
N. Y.
,
Morales-Espejel
G. E.
, and
Gabelli
A.
, “
An Experimental and Theoretical Study of Surface Rolling Contact Fatigue Damage Progression in Hybrid Bearings with Artificial Dents
,”
Wear
364
(
2016
): 211–223.
36.
Gabelliand
A.
and
Morales-Espejel
G. E.
, “
A Model for Hybrid Bearing Life with Surface and Subsurface Survival
,”
Wear
422
(
2019
): 223–234.
37.
Hardmetals—Compression Test
, ISO 4506:2018 (
Geneva, Switzerland
:
International Organization for Standardization
,
2018
).
39.
Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness of Metallic Materials
, ASTM E399-20 (
West Conshohocken, PA
:
ASTM International
, approved January 1,
2020
),
40.
Coudert
J. B.
,
Kerrigan
A.
,
Mondelin
A.
, and
Mahéo
Y.
, “
Relevance of Fracture Mechanics in Rolling Bearing: Functional Property Determination and Steel Quality Assurance
,” in
Bearing Steel Technologies: 12th Volume, Progress in Bearing Steel Metallurgical Testing and Quality Assurance
, ed.
Beswick
J. M.
(
West Conshohocken, PA
:
ASTM International
,
2020
), 474–498,
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