scholarly journals On the Creep-Rupture Strength of Notched Specimens of 18-8 Austenitic Stainless Steel

1962 ◽  
Vol 11 (107) ◽  
pp. 492-498
Author(s):  
Hisashi IZUMI ◽  
Tadashi KAWASAKI ◽  
Tadakazu SAKURAI ◽  
Gunji SHINODA ◽  
Tadao SANO
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Rupture Strength ◽  
Creep Rupture ◽  
Creep Rupture Strength ◽  
Notched Specimens

Creep Behavior of the Newly Developed Advanced Heat Resistant Austenitic Stainless Steel Grade UNS S31035

2010 ◽  
Author(s):  
Jan Ho¨gberg ◽  
Guocai Chai ◽  
Patrik Kjellstro¨m ◽  
Magnus Bostro¨m ◽  
Urban Forsberg ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Creep Behavior ◽  
Rupture Strength ◽  
Steel Grade ◽  
Creep Rupture ◽  
Creep Rupture Strength ◽  
Creep Mechanisms ◽  
Heat Resistant ◽  
High Efficient

The UNS S31035 austenitic stainless steel grade is a newly developed advanced heat resistant material for use in coal fired boilers at material temperatures up to about 700°C. This new grade has good resistance to oxidation and hot corrosion, and shows higher creep rupture strength than other austenitic stainless steels available today. This paper will mainly focus on the study of the creep mechanisms in this grade from 550°C up to 800°C by using TEM, SEM and LOM. The creep mechanisms at different temperatures and loading conditions have been identified. The interaction between dislocations and precipitates and their contribution on the creep rupture strength and fracture mechanisms have been discussed. In this paper, different models have been used to evaluate the long-term creep behavior of the grade. A creep rupture strength near 100MPa at 700°C for 100 000h has been predicted. This makes it an interesting alternative for super-heaters and reheaters in future high-efficient coal fired boilers.

scholarly journals A machine learning aided interpretable model for rupture strength prediction in Fe-based martensitic and austenitic alloys

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Osman Mamun ◽  
Madison Wenzlick ◽  
Jeffrey Hawk ◽  
Ram Devanathan
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Rupture Strength ◽  
Theoretical Calculations ◽  
Rupture Life ◽  
High Strength Steels ◽  
Creep Rupture ◽  
Gradient Boosting ◽  
Creep Rupture Strength ◽  
Value Analysis

AbstractThe class of 9–12% Cr ferritic-martensitic alloys (FMA) and austenitic stainless steels have received considerable attention due to their numerous applications in high temperature power generation industries. To design high strength steels with prolonged service life requires a thorough understanding of the long-term properties, e.g., creep rupture strength, rupture life, etc., as a function of the chemical composition and processing parameters that govern the microstructural characteristics. In this article, the creep rupture strength of both 9–12% Cr FMA and austenitic stainless steel has been parameterized using curated experimental datasets with a gradient boosting machine. The trained model has been cross validated against unseen test data and achieved high predictive performance in terms of correlation coefficient ($$R^{2} > 0.98 $$ R 2 > 0.98 for 9–12% Cr FMA and $$R^{2} > 0.95 $$ R 2 > 0.95 for austenitic stainless steel) thus bypassing the need for additional comprehensive tensile test campaigns or physical theoretical calculations. Furthermore, the feature importance has been computed using the Shapley value analysis to understand the complex interplay of different features.

Creep rupture strength of activated-TIG welded 316L(N) stainless steel

2011 ◽  
Vol 413 (1) ◽  
pp. 36-40 ◽  
Author(s):  
T. Sakthivel ◽  
M. Vasudevan ◽  
K. Laha ◽  
P. Parameswaran ◽  
K.S. Chandravathi ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Rupture Strength ◽  
Creep Rupture ◽  
Creep Rupture Strength

scholarly journals Study on Influence of Heat Treatment and Ferrite Involved upon Creep Rupture Strength of Type 321 Stainless Steel.

1959 ◽  
Vol 45 (12) ◽  
pp. 1357-1362
Author(s):  
Mamoru Nishihara ◽  
Hiroshi Hirano ◽  
Shunji Yamamoto ◽  
Kiyoshi Yoshida
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Rupture Strength ◽  
Creep Rupture ◽  
Creep Rupture Strength

scholarly journals Influence of C, B, and N on Creep-Rupture Strength and Structural Changes in Creep of 18 Cr-10 Ni Stainless Steel

1970 ◽  
Vol 56 (9) ◽  
pp. 1231-1244 ◽  
Author(s):  
Takayuki SHINODA ◽  
Ryohei TANAKA ◽  
Tomoyuki ISHII ◽  
Tohru MIMINO ◽  
Kazuhisa KINOSHITA
Keyword(s):  
Stainless Steel ◽  
Structural Changes ◽  
Rupture Strength ◽  
Creep Rupture ◽  
Creep Rupture Strength

Heat-to-Heat Variation in Creep Properties of Types 304 and 316 Stainless Steels

1975 ◽  
Vol 97 (4) ◽  
pp. 243-251 ◽  
Author(s):  
V. K. Sikka ◽  
H. E. McCoy ◽  
M. K. Booker ◽  
C. R. Brinkman
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Ultimate Tensile Strength ◽  
Rupture Strength ◽  
Creep Rupture ◽  
Creep Rupture Strength ◽  
Creep Properties ◽  
316 Stainless Steel ◽  
Relationship Of ◽  
Type 304

A wide variation in creep-rupture and long-term creep properties of 20 heats of type 304 and seven heats of type 316 stainless steel was observed. The observed variation in 1000-hr creep-rupture strength, SRt, has been related to the corresponding ultimate tensile strength variation, Sur, by a relationship of the form: SRt=αexp(βSur), where α and β are material constants. This relationship between creep-rupture strength and ultimate tensile strength was further extended for minimum-expected 105-hr creep-rupture strength data reported in the literature. The heat-to-heat variation in ultimate tensile strength for both types 304 and 316 stailness steel was explained in terms of carbon plus nitrogen content and grain intercept, d, by a relationship of the form Sur = A(C + N)−1/2 + B, where A and B are constants for a given temperature. The time to onset of third-stage creep for various heats of type 304 and 316 stainless steel was related to time to rupture by relationships that are independent of test temperature, for test times reaching 22,622 hr.

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