scholarly journals Influence of the Heat Treatment Condition upon the High-Speed Cutting Mechanism of Aluminum Alloy A2017

2012 ◽  
Vol 6 (6) ◽  
pp. 859-874 ◽  
Author(s):  
Masato SANDO ◽  
Tappei HIGASHI ◽  
Jun SHINOZUKA
Keyword(s):  
Heat Treatment ◽  
Aluminum Alloy ◽  
High Speed ◽  
Treatment Condition ◽  
Heat Treatment Condition ◽  
Cutting Mechanism ◽  
High Speed Cutting

Influence of Solution Heat Treatment Temperature and Time on the Microstructure and Mechanical Properties of Gas Induced Semi-Solid (GISS) 6061 Aluminum Alloy

2013 ◽  
Vol 313-314 ◽  
pp. 67-71 ◽  
Author(s):  
Nitikarn Pajaroen ◽  
Thawatchai Plookphol ◽  
Jessada Wannasin ◽  
Sirikul Wisutmethangoon
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aluminum Alloy ◽  
Treatment Condition ◽  
Solution Heat Treatment ◽  
Heat Treatment Condition ◽  
Eutectic Phase ◽  
6061 Aluminum Alloy ◽  
Semi Solid ◽  
Optimum Solution

The influence of solution heat treatment (SHT) temperature and time on the microstructure and mechanical properties of semi-solid 6061 aluminum alloy has been investigated in this study. Microstructure of the as-cast 6061 aluminum alloy mainly consisted of globular α-Al matrix and eutectic phase (α-Al + Mg2Si) at the grain boundary (GB). Iron rich intermetallic phase was also observed at the grain boundary. Eutectic phase started to dissolve after solution heat treatment. The dissolution of eutectic phase increased with increasing solution treatment time, however, the amount of remaining eutectic phase was found to be slightly changed after solution treating longer than 1 h at 550 °C and 2 h at 530 °C. Hardness and tensile results of specimens after artificial aging were utilized to compare and select the optimum solution heat treatment condition cooperating with the microstructural observation. The optimum solution heat treatment condition of the alloy in this study was at 530 °C for 2 h.

Optimization of post-weld heat treatment condition of arc-welded T91 steel tubes

2020 ◽  
Vol 188 ◽  
pp. 104213
Author(s):  
Ranjeet Kumar ◽  
Anand Varma ◽  
Y. Ravi Kumar ◽  
Himanshu Vashishtha ◽  
Jayant Jain ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Treatment Condition ◽  
Heat Treatment Condition ◽  
Post Weld Heat Treatment ◽  
Steel Tubes ◽  
Weld Heat

Effect of Heat Treatment Condition on the Characteristics of MnO2 Added-Fe2TiO5 Ceramics for NTC Thermistors Using Local Iron Oxide

2018 ◽  
Vol 917 ◽  
pp. 64-68
Author(s):  
Wiendartun ◽  
Jaenudin Kamal ◽  
Dadi Rusdiana ◽  
Andhy Setiawan ◽  
Dani Gustaman Syarief
Keyword(s):  
Heat Treatment ◽  
Iron Oxide ◽  
Treatment Condition ◽  
Treatment Time ◽  
Heat Treatment Condition ◽  
Heat Treatment Time ◽  
Second Phase ◽  
Room Temperature Resistivity ◽  
Electrical Characteristics ◽  
Ntc Thermistor

A study on the effect of heat treatment condition on the characteristics of MnO2 added-Fe2TiO5 ceramics for NTC thermistor has been carried out. The ceramics were produced by pressing an homogenous mixture of Fe2O3 (local/ yarosite), TiO2 and MnO2 (2.0 mole %) powders in appropriate proportions to produce Fe2TiO5 based ceramics and sintering the pressed powder at 1050 °C for 3 hours in oxygen gas. Some sintered pellets were heat treated by heating them at 300 °C for 5, 15 and 25 minutes in Ar + 7% H2 gas. The XRD analyses showed that the Fe2TiO5 ceramics with and without heat treatment time had orthorhombic structure. No peak from second phase was observed from the XRD profiles. From the electrical characteristics data, it was known that the heat treatment could change the electrical characteristics of the Fe2TiO5 based-thermistor. The thermistor constant (B) and room temperature resistivity (ρRT) decreased with the increasing of heat treatment time. All ceramics made had thermistor characteristics namely B = 3459-7596 K and ρRT = 1.056-6936.062 MΩcm. Thermistor constant of the ceramics was relatively big, indicated that ceramics made from local iron oxide in this work fit the market requirement for NTC thermistor.

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