Effect of Carbon and Titanium Additions on Mechanical Properties of B2 FeAl

被引：11

作者：

Kant, Ravi ^{[1
]}

Prakash, U. ^{[1
]}

Agarwala, Vijaya ^{[1
]}

Prasad, V. V. Satya ^{[2
]}

机构：

[1] IIT Roorkee, Dept Met & Mat Engn, Roorkee 247667, Uttar Pradesh, India

[2] Def Met Res Lab, Kanchanbagh PO, Hyderabad 500058, Andhra Pradesh, India

来源：

TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS | 2016年 / 69卷 / 04期

关键词：

B2 FeAl based alloys; Precipitation; Microstructure; Mechanical properties; IRON ALUMINIDES; INTERMETALLIC ALLOY; YIELD-STRESS; AL; COMPOSITES; FE3AL; EMBRITTLEMENT; TENSILE; SYSTEM;

D O I：

10.1007/s12666-015-0567-z

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Iron aluminides based on Fe3Al and FeAl are highly oxidation and corrosion resistant and have potential for elevated temperature structural applications. Carbon is an important alloying element in Fe3Al as it increases strength and creep resistance as well as resistance to environmental embrittlement. However, addition of carbon to FeAl has not been successful as it leads to precipitation of graphite which causes decrease in strength. Graphite formation can be prevented by the addition of titanium (Ti) which forms TiC in the FeAl matrix. Ti addition imparts strength to FeAl alloys containing carbon without loss of room temperature ductility. Observed mechanical properties have been related with the microstructure. Up to 75 % increase in elevated temperature yield strength is obtained at target service temperature (923 K). This can lead to successful development of carbon containing FeAl based alloys for elevated temperature structural applications.

引用

页码：845 / 850

页数：6

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