isostatic pressing
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2022 ◽  
Vol 1049 ◽  
pp. 69-74
Author(s):  
Evgeny Remshev ◽  
Vitaly Ignatenko ◽  
Sergey Voinash ◽  
Irina Teterina ◽  
Vladimir Malikov ◽  
...  

The effect of cold isostatic pressing of EP648 alloy after selective laser sintering is researched. The effect of cold isostatic pressing on the porosity of the structure of a material manufactured by additive technologies (AT) has been established. It is proposed to consider cold isostatic pressing as a method of subsequent treatment of products ("post-treatment") made by selective laser sintering.


2022 ◽  
pp. 103411
Author(s):  
Alessandro Sergi ◽  
Raja H.U. Khan ◽  
Sandeep Irukuvarghula ◽  
Martina Meisnar ◽  
Advenit Makaya ◽  
...  

2022 ◽  
Vol 2160 (1) ◽  
pp. 012024
Author(s):  
Yongfeng Sui ◽  
Zhonghua Liu ◽  
Yao Tu ◽  
Peijiong Yü ◽  
Peng Chu

Abstract Effect of hot isostatic pressing (HIP) treatment on the microstructure and the stress rupture properties of CM 939 Weldable alloy have been investigated. The results shown that the HIP has the function of densification and homogenization, all of the microporosity have been almost removed, the segregation of the alloy have been reduced, the microstructure became better, the stress rupture life of CM 939 Weldable alloy have been obviously improved, Meanwhile, the data dispersion of stress rupture properties have been reduced for the alloy after HIP.


2022 ◽  
pp. 102607
Author(s):  
Anton du Plessis ◽  
Seyed Mohammad Javad Razavi ◽  
Di Wan ◽  
Filippo Berto ◽  
Adam Imdaadulah ◽  
...  

Metals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 19
Author(s):  
Yanbin Pei ◽  
Xuanhui Qu ◽  
Qilu Ge ◽  
Tiejun Wang

prepared by powder metallurgy process incorporating atomization and hot isostatic pressing (HIP) sintering at six different temperatures from 600 to 1160 °C, borated stainless steel (BSS) containing boron content of 1.86 wt% was studied. The phase of BSS, relative density of different temperature, microstructure, elemental distribution, and mechanical properties were tested and analyzed. The phases of the alloy were calculated by the Thermo-Calc (2021a, Thermo-Calc Software, Solna, Sweden) and studied by quantitative X-ray diffraction phase analysis. The distributions of boron, chromium, and iron in grains of the alloy were analyzed by scanning electron microscopy and transmission electron microscope. The grain size distributions and average grain sizes were calculated for the boron-containing phases at 900, 1000, 1100, and 1160 °C, as well as the average grain size of the austenite phase at 700 and 1160 °C. After undergoing HIP sintering at 900, 1000, 1100, and 1160 °C, respectively, the tensile strength and ductility of the alloy were tested, and the fracture surfaces were analyzed. It was found that the alloy consisted of two phases (austenite and boron-containing phase) when HIP sintering temperature was higher than 900 °C, and the relative density of the prepared alloys was higher than 99% when HIP temperature was higher than 1000 °C. According to the boron-containing phase grain size distribution and microstructure analysis, the boron-containing phase precipitated both inside the austenite matrix and at the grain boundaries and its growth mechanism was divided into four steps. The tensile strength and elongation of alloy were up to 776 MPa and 19% respectively when the HIP sintering was at 1000 °C.


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