Strength-Toughness Improvement of 15-5PH Stainless Steel by Double Aging Treatment

2021 ◽  
Author(s):  
Rigele Te ◽  
Yutuo Zhang
Keyword(s):  
Stainless Steel ◽  
Aging Treatment ◽  
Double Aging ◽  
Toughness Improvement

scholarly journals The Effect of Aging on Precipitates, Mechanical and Magnetic Properties of Fe-21Cr-15Ni-6Mn-Nb Low Magnetic Stainless Steel

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 819
Author(s):  
Changsheng Li ◽  
Kun Li ◽  
Jingbo Dong ◽  
Jinyi Ren ◽  
Yanlei Song
Keyword(s):  
Heat Treatment ◽  
Tensile Strength ◽  
Stainless Steel ◽  
Magnetic Properties ◽  
Solution Heat Treatment ◽  
Aging Treatment ◽  
Relative Magnetic Permeability ◽  
Coarsening Behavior ◽  
The Matrix ◽  
Coherent Orientation

The effect of aging on the precipitates, mechanical and magnetic properties of Fe-21Cr-15Ni-6Mn-Nb low magnetic stainless steel were investigated. The steel was aged at 550–750 °C for 2 h after solution heat treatment at 1100 °C for 1 h. During the aging treatment, the (Nb, V)(C, N) particles gradually precipitated in the grain, which were coherent or semi-coherent with the matrix. When the aging temperature was beyond 650 °C, the coarsening rate of (Nb, V)(C, N) particles increase rapidly and the coherent orientation between (Nb, V)(C, N) particles and the matrix was lost gradually. Meanwhile, coarse M23C6 was distributed at the grain boundary with chain shape, which was non-coherent with the matrix. The coarsening behavior of (Nb, V)(C, N) precipitates in the grain was analyzed, and the size of the particles precipitated after aging treatment at 650°C for different time was calculated and studied. After aging treatment at 650 °C for 2 h, the yield strength and tensile strength of the stainless steel was 705.6 MPa and 1002.3 MPa, the elongation and the relative magnetic permeability was 37.8% and 1.0035, respectively.

scholarly journals Effect of aging treatment on fatigue behavior of Nb-added ferritic stainless steel type 429 welds in 3% NaCl solution

2021 ◽  
Vol 39 (3) ◽  
pp. 158-162
Author(s):  
Atsuhiro KOYAMA ◽  
Toru TAKASE ◽  
Yohei SONOBE ◽  
Masayuki AKITA ◽  
Toshifumi KAKIUCHI ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Ferritic Stainless Steel ◽  
Fatigue Behavior ◽  
Aging Treatment ◽  
Nacl Solution ◽  
Steel Type

Precipitation Behavior of a Maraging Stainless Steel

2012 ◽  
Vol 567 ◽  
pp. 92-95 ◽  
Author(s):  
Yue Jiang ◽  
Ying Ying Ai ◽  
Qi Ting Wang
Keyword(s):  
Stainless Steel ◽  
Treatment Process ◽  
Aging Treatment ◽  
Heat Treatment Process ◽  
New Materials ◽  
Precipitation Behavior ◽  
Thermo Calc Software ◽  
Calculation Results ◽  
Maraging Stainless Steel ◽  
Good Agreement

The changes of precipitation phases and matrix structures in Fe-13Cr-7Ni-4Mo-4Co-2W maraging stainless steel at different temperature were studied by using the Thermo-Calc software. The research was on the microstructures and precipitation behaviors of the maraging stainless steel, the performance is investigated through solution and aging treatment by TEMand SADP. The calculation results were in good agreement with the experiments, which demonstrated that when maraging stainless steel was treated in high temperature, the Laves-Fe2Mo precipitates became totally dissolved as the temperature was above 1050°C, and about 8% of R phase was found during aging. The calculation provides a guiding significant to the establishment of reasonable heat treatment process and the development of new materials.

scholarly journals Effects of High Temperature Aging Treatment on the Microstructure and Impact Toughness of Z2CND18-12N Austenitic Stainless Steel

Metals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1691
Author(s):  
Hui Zhang ◽  
Yanfeng Liu ◽  
Xian Zhai ◽  
Wenkai Xiao
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Impact Toughness ◽  
Charpy Impact ◽  
Aging Treatment ◽  
Fracture Morphology ◽  
Charpy Impact Test ◽  
Scattered Electron ◽  
Σ Phase ◽  
Effects Of Aging

During the casting cooling process or the forging process, austenitic stainless steel will remain at around 800 °C for some time. During this period, precipitate particle behaviors in austenitic stainless steel (containing ferrite) will cause a reduction in ductility, which can lead to material cracking. In this study, the effects of aging at 800 °C on the microstructure, impact toughness and microhardness of Z2CND18-12N austenitic stainless steel were systematically investigated. The precipitation processes of the χ and σ phases were characterized by color metallography and back scattered electron (BSE) signals. The toughness was investigated by the Charpy impact test. After the aging treatment, the χ and σ phases precipitated successively in the ferrite, and as the aging duration increased, the χ-phase dissolved and the σ-phase precipitated along the austenite grain boundaries. These all lead to a decrease in toughness and an increase in microhardness. Finally, the relationship between fracture morphology and aging time is discussed herein, and a crack mechanism is given.

scholarly journals Development of Low Silver AgCuZnSn Filler Metal for Cu/Steel Dissimilar Metal Joining

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 198 ◽  
Author(s):  
Peng Xue ◽  
Yang Zou ◽  
Peng He ◽  
Yinyin Pei ◽  
Huawei Sun ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Shear Strength ◽  
Penetration Depth ◽  
Aging Process ◽  
Filler Metal ◽  
Aging Treatment ◽  
304 Stainless Steel ◽  
Dissimilar Metal ◽  
Brazed Joints ◽  
Brazed Joint

The microstructure and properties of a Cu/304 stainless steel dissimilar metal joint brazed with a low silver Ag16.5CuZnSn-xGa-yCe braze filler after aging treatment were investigated. The results indicated that the addition of Ce could reduce the intergranular penetration depth of the filler metal into the stainless steel during the aging process. The minimum penetration depth in the Ag16.5CuZnSn-0.15Ce brazed joint was decreased by 48.8% compared with the Ag16.5CuZnSn brazed joint. Moreover, the shear strength of the brazed joint decreased with aging time while the shear strength of the AgCuZnSn-xGa-yCe joint was still obviously higher than the Ag16.5CuZnSn joint after a 600 h aging treatment. The fracture type of the Ag16.5CuZnSn-xGa-yCe brazed joints before aging begins ductile and turns slightly brittle during the aging process. Compared to all the results, the Ag16.5CuZnSn-2Ga-0.15Ce brazed joints show the best performance and could satisfy the requirements for cost reduction and long-term use.

CARPENTER CUSTOM 455

Alloy Digest ◽  
1967 ◽  
Vol 16 (4) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Precipitation Hardening ◽  
Martensitic Stainless Steel ◽  
Aging Treatment ◽  
High Strength ◽  
Heat Treating ◽  
High Yield ◽  
Low Carbon ◽  
High Yield Strength

Abstract Carpenter Custom 455 is a low-carbon martensitic stainless steel that responds to precipitation-hardening. The single aging treatment produces exceptionally high yield strength with good ductility and toughness. It is suitable for applications requiring high strength and corrosion resistance at temperatures up to 800 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-193. Producer or source: Carpenter.

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