Tungsten inert gas surface modification of SAE 4140 steel

被引：3
作者：
Eroglu, M [1 ]
Önalp, S
机构：
[1] Firat Univ, Fac Engn, Dept Met & Mat Engn, Elazig, Turkey
[2] Eti Krom As, Elazig, Turkey
来源：
MATERIALS SCIENCE AND TECHNOLOGY | 2002年 / 18卷 / 12期
关键词：
D O I：
10.1179/026708302225007826
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present study, the surface of SAE 4140 steel was separately are melted and alloyed with preplaced high carbon ferrochromium powder using a. tungsten inert gas (TIG) arc heat source. The effects of specimen thickness and heat input for arc melting and thickness of preplaced high carbon ferrochromium powder layer for surface alloying on the microstructure, hardness and wear properties of the modified surfaces were investigated. Following arc melting and surface alloying, conventional characterisation techniques such as optical microscopy, scanning electron microscopy (SEM), energy dispersive spectrography (EDS) and X-ray diffraction were employed to study the microstructure of the arc melted and alloyed surfaces. Hardness measurements were performed across the modified zones and wear properties of the surfaces were evaluated by a pin-on-disc abrasive wear testing method. The results indicated a significant increase in surface hardness after melting at low heat input (0(.)7 kJ mm(-1)) and alloying with a preplaced high carbon ferrochromium powder layer giving a surface composition of 3%C and 25(.)8%Cr, with higher wear resistance surfaces. This was attributed to the fully martensitic microstructure for surface melting and the high volume friction of Cr7C3 carbides in the matrix of austenite for surface alloying.
引用
收藏
页码：1544 / 1550
页数：7
相关论文
共 28 条
[11]   Two- and three-body abrasive wear behaviour of different heat-treated boron alloyed high chromium cast iron grinding balls [J].
Izciler, M ;
Çelik, H .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2000, 105 (03) :237-245
[12]   WEAR PROPERTIES OF (FE, CR)7C3 CARBIDE BULK ALLOYS [J].
KAGAWA, A ;
KAWASHIMA, S ;
OHTA, Y .
MATERIALS TRANSACTIONS JIM, 1992, 33 (12) :1171-1177
[13]   Joint second prize - Low temperature plasma nitriding of 316 stainless steel - Nature of S phase end its thermal stability [J].
Li, XY .
SURFACE ENGINEERING, 2001, 17 (02) :147-152
[14]   Structure of laser remelted surface of cast irons [J].
Lima, MSF ;
Goldenstein, H .
SURFACE ENGINEERING, 2000, 16 (02) :127-130
[15]   Plasma nitriding and plasma nitrocarburizing of electroplated hard chromium to increase the wear and the corrosion properties [J].
Menthe, E ;
Rie, KT .
SURFACE & COATINGS TECHNOLOGY, 1999, 112 (1-3) :217-220
[16]   Addition of ceramic particles to TIG melted titanium surfaces [J].
Mridha, S ;
Ng, BS .
SURFACE ENGINEERING, 1999, 15 (03) :210-215
[17]   Correlation of microstructure with the wear resistance and fracture toughness of duocast materials composed of high-chromium white cast iron and low-chromium steel [J].
Oh, H ;
Lee, S ;
Jung, JY ;
Ahn, S .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (03) :515-524
[18]   Wear behavior of anti-galling surface textured gray cast iron using pulsed-CO2 laser treatment [J].
Pantelis, DI ;
Pantazopoulos, G ;
Antoniou, SS .
WEAR, 1997, 205 (1-2) :178-185
[19]   Metallographic characterization of hypoeutectic martensitic white cast irons: Fe-C-Cr system [J].
Pero-Sanz, JA ;
Plaza, D ;
Verdeja, JI ;
Asensio, J .
MATERIALS CHARACTERIZATION, 1999, 43 (01) :33-39
[20]   Evaluation of thermal shock strength of thermal-sprayed coatings by the laser irradiation technique [J].
Qi, ZM ;
Amada, S ;
Akiyama, S ;
Takahashi, C .
SURFACE & COATINGS TECHNOLOGY, 1998, 110 (1-2) :73-80
123