Influence of Sintering Temperature on Mechanical Properties of Ti-6Al-4V Compacts by Metal Injection Molding

2005 ◽  
Vol 475-479 ◽  
pp. 2639-2642 ◽  
Author(s):  
Shi Bo Guo ◽  
Xuan Hui Qu ◽  
Xin Bo He
Keyword(s):  
Mechanical Properties ◽  
Injection Molding ◽  
Titanium Alloys ◽  
Sintering Temperature ◽  
High Vacuum ◽  
High Strength ◽  
Metal Injection Molding ◽  
Light Elements ◽  
Excellent Corrosion Resistance ◽  
Real Challenge

Titanium and titanium alloys have low density, high strength, excellent corrosion resistance in many media and are known to be biocompatible. This combination of properties makes titanium and its alloys an excellent choice for the applications, such as watch parts, medical devices, dental parts and sports goods. However, in the respect of fabricating complicated shaped parts, low machinability may be a barrier to practical uses. Therefore, it is considered to be very available that metal injection molding(MIM) process is applied to fabricate titanium alloy parts[1-2]. Nevertheless, injection molding of titanium and its alloys presents a real challenge to the processor due to its reactivity. Titanium not only has a strong affinity to oxygen, but also tends to react readily with carbon, nitrogen or hydrogen from the furnace atmosphere. Therefore, contamination by interstitial light elements such as oxygen and carbon is a serious problem because they have much influence on the mechanical properties of titanium alloys[3-5]. So it is necessary to control debinding and sintering conditions. In this paper, preparation of Ti-6Al-4V compacts was performed by MIM process. To reduce the contamination, the debound compacts were sintered at moderate temperature range from 1170°C to 1320°C and high vacuum (10-3Pa). On these conditions, the mechanical properties and relative density of sintered compacts were investigated.

Characteristics of STS630 Based Metal Injection Molding Products on Powder Size, Sintering and Heat Treatment Conditions

2013 ◽  
Vol 372 ◽  
pp. 398-401
Author(s):  
Hee Jin Jeong ◽  
Hwan Kyun Yeo ◽  
Dae Yeol Bae ◽  
Je Hyun Kim ◽  
Dong Woo Kim ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Injection Molding ◽  
Sintering Temperature ◽  
Processing Condition ◽  
Metal Injection Molding ◽  
Powder Size ◽  
Optimal Processing ◽  
Treatment Conditions ◽  
Debinding Process

This study proposes the research method to examine through experiment the mechanical properties of final products based on the size and sintering temperature of powder particle during STS630 powder based metal injection molding and heat treatment processing condition after the sintering. The feedstock for the injection was manufactured based on STS630 powder with the diameter of 7.0±1.0μm and 8.0±1.0μm and the sintering was carried at 2 temperature conditions of 1300°C and 1355°C after the injection and debinding process. Heat treatment conditions of sample after the sintering were divided into 2 types thus final samples of total 8 cases were manufactured. Then, the 5 types of mechanical properties test were conducted. Optimal processing conditions for MIM molding and heat treatment of STS630 powder could be established based on it.

Metal Injection Molding Process of Mo2FeB2 Boride Base Cermets

2007 ◽  
Vol 534-536 ◽  
pp. 377-380 ◽  
Author(s):  
Hirofumi Tashiro ◽  
Koro Hirata ◽  
Yuji Yamasaki ◽  
Kenichi Takagi
Keyword(s):  
Mechanical Properties ◽  
Liquid Phase ◽  
Injection Molding ◽  
Sintering Temperature ◽  
Casting Machine ◽  
Dimensional Accuracy ◽  
Metal Injection Molding ◽  
Processing Route ◽  
Injection Molding Process ◽  
Molding Process

Mo2FeB2 boride base cermets produced by a novel sintering technique, called reaction boronizing sintering through a liquid phase, have excellent mechanical properties and wear and corrosion-resistances. Hence, the cermets are applied to the injection molding die-casting machine parts and so on. Metal injection molding (MIM) is a suitable processing route for the mass production of complex shaped and high performance components. In general, it is difficult for the liquid phase sintered materials to be applied to the injection molding process because significant shrinkage and deformation occur during sintering. In this study, the MIM process was applied in the production of Mo2FeB2 boride base cermets parts. We investigated that the effect of deoxidization and sintering temperature on mechanical properties and deformation of the cermets. As a result, deoxidization temperature of 1323K and sintering temperature of 1518K were suitable. The MIM products of the cermets showed allowable dimensional accuracy and the same mechanical properties as the press-sintered.

New Titanium Alloy Feedstock for High Performance Metal Injection Molding Parts

2016 ◽  
Vol 704 ◽  
pp. 118-121 ◽  
Author(s):  
Toby Tingskog ◽  
Frederic Larouche ◽  
Louis Philippe Lefebvre
Keyword(s):  
Titanium Alloy ◽  
Injection Molding ◽  
Titanium Alloys ◽  
High Performance ◽  
High Strength ◽  
Metal Injection Molding ◽  
Low Density ◽  
Metallurgical Properties ◽  
Sporting Goods

Ti 6-4 and other Titanium alloys have great potential for Metal Injection Molding of high performance parts. Markets like Automotive, Aerospace, 3C and sporting goods can benefit from the low density and high strength of Titanium. A new feedstock has been developed that incorporates pre-alloyed Ti 6-4 and discrete additions that simplify MIM processing and enhance properties. Processing and sintering parameters are presented together with mechanical and metallurgical properties of completed parts.

Screw Form Rolling of Beta Type Titanium Alloy Preliminary Worked by Torsion

2010 ◽  
Vol 654-656 ◽  
pp. 906-909 ◽  
Author(s):  
Kazuhiro Kume ◽  
Mitsuaki Furui ◽  
Susumu Ikeno ◽  
Yusuke Ishisaka ◽  
Masayuki Yamamoto
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Corrosion Resistance ◽  
Titanium Alloys ◽  
Medical Equipment ◽  
High Strength ◽  
Golf Club ◽  
Excellent Corrosion Resistance ◽  
Nuclear Plants ◽  
Club Head

Beta type titanium alloys in a cold processability are light, have high strength, excellent corrosion resistance and the same level as Young's modulus of human bone. Therefore, beta type titanium alloys are used for plant facilities such as nuclear plants, architectural materials, aircraft, car, biomaterial, medical equipment, glasses and golf club head, etc. Microstructure and mechanical properties of beta type titanium alloys processed by rolling and heat treatment have been reported [1]. Additionally, screw form rolling using beta type titanium alloys has also been reported [2]. However, the development in those characteristics after the preliminary working by torsion has been unknown.

Microstructure and Properties of Laser Surface Carburized Titanium and Titanium Alloys

2014 ◽  
Vol 936 ◽  
pp. 1086-1090 ◽  
Author(s):  
Jing Jie Dai ◽  
Cbuan Zhong Chen ◽  
Shou Ying Li ◽  
Lei Zhuang
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Titanium Carbide ◽  
Titanium Alloys ◽  
Surface Properties ◽  
High Strength ◽  
Laser Surface ◽  
Practical Applications ◽  
Excellent Corrosion Resistance ◽  
Light Density

Titanium and titanium alloys are widely used in many fields due to their some characteristics such as light density, high strength and excellent corrosion resistance. However, their practical applications are limited by their poor surface mechanical properties. Laser surface carburizing can improve the surface properties of titanium and titanium via the formation of titanium carbide and other reinforcing phases. In this paper, the properties of the alloyed coatings, the growth morphologies and the formation mechanism of titanium carbide are discussed.

scholarly journals Modification of Mechanical Properties of High-Strength Titanium Alloys VT23 and VT23M Due to Impact-Oscillatory Loading

Metals ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 80 ◽  
Author(s):  
Mykola Chausov ◽  
Janette Brezinová ◽  
Andrii Pylypenko ◽  
Pavlo Maruschak ◽  
Liudmyla Titova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Titanium Alloys ◽  
High Strength ◽  
The Self ◽  
Self Organization ◽  
Two Phase ◽  
Rolled Metal ◽  
Technological Method ◽  
Equilibrium Processes ◽  
Production Conditions

A simple technological method is proposed and tested experimentally, which allows for the improvement of mechanical properties in sheet two-phase high-strength titanium alloys VT23 and VT23M on the finished product (rolled metal), due to impact-oscillatory loading. Under impact-oscillatory loading and dynamic non-equilibrium processes (DNP) are realized in titanium alloys, leading to the self-organization of the structure. As a result, the mechanical properties of titanium alloys vary significantly with subsequent loading after the realization of DNP. In this study, the test modes are found, which can be used in the production conditions.

Preparation and Mechanical Properties of Inconel718 Alloy by Metal Injection Molding

2010 ◽  
Vol 39 (5) ◽  
pp. 775-780 ◽  
Author(s):  
Hu Youhua ◽  
Li Yimin ◽  
He Hao ◽  
Lou Jia ◽  
Tang Xiao
Keyword(s):  
Mechanical Properties ◽  
Injection Molding ◽  
Metal Injection Molding
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