Interstitial elements in Ti-13Nb-13Zr alloy produced by powder metallurgy using hydride powders

被引：4

作者：

Petroni, S. L. G. ^{[1
]}

Paula, M. S. M. ^{[2
]}

Henriques, V. A. R. ^{[1
]}

机构：

[1] Inst Aeronaut & Space, Sao Jose Dos Campos, SP, Brazil

[2] Technol Inst Aeronaut, Sao Jose Dos Campos, SP, Brazil

来源：

POWDER METALLURGY | 2013年 / 56卷 / 03期

基金：

巴西圣保罗研究基金会;

关键词：

Titanium; Ti-13Nb-13Zr; Interstitial elements; Powder metallurgy; Factorial design; TITANIUM-ALLOYS; COMPOSITES;

D O I：

10.1179/1743290112Y.0000000046

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Absorption of interstitial elements during the processing of Ti-13Nb-13Zr alloy using hydride powders was investigated. Oxygen, nitrogen and carbon contents were quantified in the steps of hydriding and milling of powders and after sintering of green compacts. The influence of the hydriding treatment was analysed regarding the interstitial contents in the raw materials. Milling and sintering were evaluated according to a 3(3) factorial design considering the effects of milling time of titanium hydride from 1 to 11 h, sintering temperature between 1000 and 1400 degrees C and holding time from 1 to 5 h. The results showed that the oxygen contents in sintered samples are strongly affected by the hydriding and milling of powders. The effects of the sintering temperature and holding time were found to be significant mainly for the increase in nitrogen and carbon contents. The results of the factorial design, along with the study of microstructural evolution allowed the optimisation of the process parameters in order to obtain the alloy with the lowest possible contents of interstitial elements and homogeneous microstructure.

引用

页码：202 / 207

页数：6

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