Characterisation of nickel based hardfacing deposits on austenitic stainless steel

被引：20

作者：

Das, CR

Albert, SK

Bhaduri, AK ^{[1
]}

Sudha, C

Terrance, ALE

机构：

[1] Indira Gandhi Ctr Atom Res, Mat Joining Sect, Mat Technol Div, Kalpakkam 603102, Tamil Nadu, India

[2] Indira Gandhi Ctr Atom Res, Phys Met Sect, Kalpakkam 603102, Tamil Nadu, India

来源：

SURFACE ENGINEERING | 2005年 / 21卷 / 04期

关键词：

nickel based alloy; dilution; hardness; boride; carbide;

D O I：

10.1179/174329405X40867

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Nickel based hardfacing alloys Colmonoy-5 and Colmonoy-6 deposited on type 316L austenitic stainless steel substrate using the gas tungsten arc welding process, were characterised for their microstructure and hardness variations across the deposit/substrate interface, and for identification of the principal precipitates present in these hardface deposits. Hardness measurements and electron probe microanalysis (EPMA) across the interface revealed the presence of a dilution zone 2.5 mm wide in the Colmonoy-6 deposit and 1.5 mm wide in the Colmonoy-5 deposit. EPMA and X-ray diffraction studies of the precipitates showed that the blocky type precipitates were chromium borides and the needle-like precipitates were chromium carbides. Also, stress relief heat treatment at 1123 K for 4 h was found to have no significant effect on the hardness of these hardface deposits.

引用

页码：290 / 296

页数：7

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ASM International, 1993, ASM MET HDB, V6, P794

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