Thermophysical properties of the Ni-based alloy Nimonic 80A up to 2400 K  

作　　者：B.Wilthan R.Tanzer W.Schützenhfer G.Pottlacher 

机构地区：[1]Institute of Experimental Physics,Graz University of Technology,Petersgasse 16,8010 Graz,Austria [2]Bhler Edelstahl GmbH,Mariazellerstrasse 25,8605 Kapfenberg,Austria

出　　处：《Rare Metals》2006年第5期529-531,共3页稀有金属（英文版）

基　　金：This work was financially supported by the Austrian "Forschungsfrderungsgesellschaft mbH", Krntner Strasse 21-23, 1010 Vienna, under contract No. 810999.

摘　　要：Nimonic 80A is a nickel-chromium alloy which is strengthened by additions of titanium and aluminium. The alloy is used for high temperature, high strength applications. Wire shaped Nimonic 80A samples are resistively volume heated as part of a fast capacitor discharge circuit. Time resolved measurements with sub-μs resolution of current through the specimen are performed with a Pearson probe, voltage drop across the specimen is measured with knife-edge contacts and ohmic voltage dividers and the radiance temperature of the sample with a pyrometer. These measurements allow to determine heat of fusion as well as heat capacity and electrical resistivity at initial geometry of Nimonic 80A as a function of temperature in the solid and in the liquid phase up to 2400 K.Nimonic 80A is a nickel-chromium alloy which is strengthened by additions of titanium and aluminium. The alloy is used for high temperature, high strength applications. Wire shaped Nimonic 80A samples are resistively volume heated as part of a fast capacitor discharge circuit. Time resolved measurements with sub-μs resolution of current through the specimen are performed with a Pearson probe, voltage drop across the specimen is measured with knife-edge contacts and ohmic voltage dividers and the radiance temperature of the sample with a pyrometer. These measurements allow to determine heat of fusion as well as heat capacity and electrical resistivity at initial geometry of Nimonic 80A as a function of temperature in the solid and in the liquid phase up to 2400 K.

关 键 词：thermophysical properties Nimonic 80A RESISTIVITY ENTHALPY heat capacity latent heat 

分 类 号：TG111.3[金属学及工艺—物理冶金]