Microstructural evolution and mechanical properties of cast Al-2Li-2Cu-0.5Mg-0.2Zr alloy during heat treatment

2017 ◽  
Vol 132 ◽  
pp. 312-319 ◽  
Author(s):  
Xiaolong Zhang ◽  
Liang Zhang ◽  
Guohua Wu ◽  
Wencai Liu ◽  
Chunchang Shi ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Microstructural Evolution

Prediction of Mechanical Properties and Microstructure Distribution of Normalized Large Marine Crankthrow

2007 ◽  
Vol 26-28 ◽  
pp. 1037-1040 ◽  
Author(s):  
Ming Yue Sun ◽  
Shan Ping Lu ◽  
Shi Jian Li ◽  
Dian Zhong Li ◽  
Yi Yi Li
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Computer Simulation ◽  
Microstructural Evolution ◽  
Temperature Evolution ◽  
Phase Volume ◽  
Cooling Process ◽  
Controlled Cooling ◽  
Prediction Of Mechanical Properties

Based on the measured CCT diagram of steel S34MnV, the parameters for the heat treatment of large marine crankthrow were designed, and the models for predicting microstructural evolution and mechanical properties were developed. By computer simulation, the temperature and phase volume evolutions in the controlled cooling process were predicted together with the final mechanical properties. Finally, the manufactural trial was carried out in heavy plant, the temperature evolution and final mechanical properties on the blank were obtained. The manufactural data agree well with the predicted results.

Microstructural Evolution and Mechanical Properties of Modified 9%Cr-1%Mo Steel upon Isothermal Heat-Treatment

2005 ◽  
Vol 475-479 ◽  
pp. 81-84
Author(s):  
Sung Kang Hur ◽  
Kee Sam Shin ◽  
Jung Hoon Yoo ◽  
Ja Min Koo ◽  
Soo Lee ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Mechanical Property ◽  
Microstructural Evolution ◽  
Heat Treating ◽  
Air Cooling ◽  
Isothermal Heat Treatment ◽  
Martensitic Structure ◽  
Heat Treated ◽  
Evolution Of Microstructure

The evolution of microstructure and its effects on the mechanical properties of modified 9%Cr-1%Mo steel during heat-treating at 1050°C for 15 min and then isothermal heat treatment at 380~760°C with subsequent air-cooling have been investigated. For the microstructural and mechanical property analyses, OM, SEM, EDS, XRD, hardness and impact tests were used. In accordance with the severity of the heat-treatment, the microstructure evolved from the untransformed martensite to the partially transformed dual phases of martensite and ferrite, and then fully transformed to ferrite. Impact values at ambient temperature for specimens isothermally heat-treated at 320 - 380°C, predominantly at about 350°C were lower than others’ with similar martensitic structure. The partially transformed specimens with dual phases of martensite and ferrite also showed lower impact values than samples with untransformed with martensitic, and transformed with ferritic structures.

Effects of Homogenization on Microstructures and Mechanical Properties of as Cast AZ91 Mg Alloy

2011 ◽  
Vol 217-218 ◽  
pp. 1123-1128
Author(s):  
Jun Wei Liu ◽  
Shi Qiang Lu ◽  
Xian Juan Dong ◽  
Xuan Xiao
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Microstructural Evolution ◽  
Peak Stress ◽  
Mg Alloy ◽  
Second Phase ◽  
Compression Process ◽  
Heat Treated ◽  
Microstructures And Mechanical Properties

The microstructural evolution and mechanical properties of as cast AZ91 Mg alloy enduring different homogenization conditions were researched. The results show that the peak stress and plasticity obtain improvement with the increase of heat treated time and temperature until 693K. When the temperature is higher than 743K, the sample will occur the over-burned and directly lead to the decrease of mechanical properties. Otherwise, with the increase of heat treated time and temperatures, the second phase gradually precipitate from the solution, while the grain evolution is not obvious. In the compression process for the samples after heat treatment, some twins could be found in the grains.

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