Effect of thermomechanical treatment on MX phase precipitation behavior in CLAM steel

2021 ◽  
Vol 173 ◽  
pp. 112785
Author(s):  
Sheng Yin ◽  
Yuan Liu ◽  
Fei Zhao
Keyword(s):  
Thermomechanical Treatment ◽  
Phase Precipitation ◽  
Precipitation Behavior ◽  
Clam Steel

Phase precipitation behavior and mechanical properties of multi-phase Nb-Ti-C and Nb-Ti-Al-C alloys

2021 ◽  
pp. 141218
Author(s):  
Wenqing Wei ◽  
Jing Sun ◽  
Shuzhi Zhang ◽  
Bingqiang Liu ◽  
Kai Yan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Phase Precipitation ◽  
Precipitation Behavior ◽  
Multi Phase

Phase precipitation behavior of a quenched β-solidifying TiAl alloy with a fully-B2 microstructure during annealing at 800°C

2020 ◽  
Vol 812 ◽  
pp. 152118 ◽  
Author(s):  
Guang Yang ◽  
Xiaoxiao Yang ◽  
Yifei Wang ◽  
Liang Cheng ◽  
Hongchao Kou ◽  
...  
Keyword(s):  
Tial Alloy ◽  
Phase Precipitation ◽  
Precipitation Behavior

The Study on the Precipitation and Mechanical Properties of Steel with Copper

2010 ◽  
Vol 654-656 ◽  
pp. 66-69 ◽  
Author(s):  
Chuang Li ◽  
Xue Min Wang ◽  
Xin Lai He ◽  
Cheng Jia Shang ◽  
Yu He
Keyword(s):  
Mechanical Properties ◽  
Electron Microscope ◽  
Volume Fraction ◽  
Optical Microscope ◽  
Second Phase ◽  
Phase Precipitation ◽  
Precipitation Behavior ◽  
Quenching Temperature ◽  
Bearing Steels ◽  
Transition Electron

The properties and precipitation behavior of Cu-bearing steels have been investigated. The optical microscope and transition electron microscope were employed to study the influence of interrupted cooling and quenching temperature on the precipitation behavior. Also, the properties of samples with different quench processes were tested. The results show that when the steel is interruptedly cooled and quenched from 650-700°C, with the quenching temperature increasing the volume fraction of martensite becomes larger and the hardness becomes higher. When the microstructure is ferrite the second-phase precipitates occurs and they are proved copper-rich particles. However there are no obvious precipitates in martensite. The copper-rich second phase forms by the way of inter-phase precipitation.

Elements segregation and phase precipitation behavior at grain boundary in a Ni-Cr-W based superalloy

2016 ◽  
Vol 122 ◽  
pp. 189-196 ◽  
Author(s):  
Ruifeng Dong ◽  
Jinshan Li ◽  
Tiebang Zhang ◽  
Rui Hu ◽  
Hongchao Kou
Keyword(s):  
Grain Boundary ◽  
Phase Precipitation ◽  
Precipitation Behavior

Effects of Si on Phase Stability and Precipitation Behavior of C14 Laves Phase (Fe,Cr)2(Nb,Mo) in High Cr αFe-base Alloys

MRS Advances ◽  
2019 ◽  
Vol 4 (25-26) ◽  
pp. 1477-1483
Author(s):  
Yoshisato Kimura ◽  
Ko Kato ◽  
Yaw Wang Chai
Keyword(s):  
Phase Stability ◽  
Scanning Transmission Electron Microscopy ◽  
Lattice Mismatch ◽  
Laves Phase ◽  
Phase Precipitation ◽  
Precipitation Behavior ◽  
Transmission Electron ◽  
Scanning Transmission ◽  
Plate Shape ◽  
Ledge Mechanism

ABSTRACTThe growth mechanism of C14 Laves phase in the bcc αFe matrix was determined as the ledge mechanism on the (110)α//(0001)C14 habit plane in Fe-20Cr-0.5Nb-1Mo (at%) alloys annealed at 1073 K for 24 hours, using conventional and scanning transmission electron microscopy. Terrace planes are the basal plane of hcp-based C14 structure. Precipitation particles tend to grow in plate shape depending on the anisotropic difference of lattice mismatch. The addition of Si with Mo remarkably enhances C14 Laves phase precipitation. The area fraction of Laves phase increases from 5.9% to 12.1% by the 2Si addition on Fe-20Cr-0.5Nb-2Mo alloys. Contrary to this, the addition of Si is not effective to increase Laves phase precipitation. It is indicated that Si improves the phase stability of C14 Laves phase while the partitioning of Mo into C14 Laves phase would be promoted due to the attractive interaction between Mo and Si.

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