Superalloys for Industry Applications最新文献

Laser Welding of Different Dental Alloys 不同牙科合金的激光焊接

Superalloys for Industry Applications Pub Date : 2018-08-01 DOI: 10.5772/INTECHOPEN.76347

L. Ardelean, L. Reclaru, C. Borțun, B. Ghiban

引用次数: 2

Laves Phase in Alloy 718 Fusion Zone 718合金熔合区的片状相

Superalloys for Industry Applications Pub Date : 2018-08-01 DOI: 10.5772/INTECHOPEN.70325

S. Manikandan, D. Sivakumar, M. Kamaraj

{"title":"Laves Phase in Alloy 718 Fusion Zone","authors":"S. Manikandan, D. Sivakumar, M. Kamaraj","doi":"10.5772/INTECHOPEN.70325","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.70325","url":null,"abstract":"The gas tungsten arc (GTA) welded fusion zone of alloy 718 has been well investigated on the formation of interdendritic Laves phase. This article deals with the various process control methodologies for minimizing the microsegregation and Laves phase such as the enhanced weld cooling rate in GTA welding (GTAW) process and modification in weld metal chemistry. Even though the high energy density welding processes such as electron beam (EB) and laser beam (LB) welding techniques are proven in minimizing the microsegregation and Laves phase, the requirement of conventional GTA welding process still exists in the aerospace industry due to the complex shapes of the components and the inaccessible conditions for executing the welding process. The enhance- ment in the weld cooling rate and modified weld metal chemistry resulted in the refined fusion zone microstructure and reduced microsegregation. Enhanced weld efficiency on ultimate tensile strength (UTS) and 0.2% YS at 25°C was observed to the tune of 85 to 93% by employing cryogenic cooling in GTA welding process. Similar improvement in weld efficiency at 650°C was observed. However, the evaluated weld efficiencies with cryogenically cooled weld metal were marginally lower than the previous works in EB and LB welds only by 2–3%.","PeriodicalId":194741,"journal":{"name":"Superalloys for Industry Applications","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120954241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Ultrasonic Assisted Machining of Nickel-Based Superalloy Inconel 718 镍基高温合金Inconel 718的超声辅助加工

Superalloys for Industry Applications Pub Date : 2018-08-01 DOI: 10.5772/INTECHOPEN.76085

Yongbo Wu, Qiang Wang, Sisi Li, D. Lu

{"title":"Ultrasonic Assisted Machining of Nickel-Based Superalloy Inconel 718","authors":"Yongbo Wu, Qiang Wang, Sisi Li, D. Lu","doi":"10.5772/INTECHOPEN.76085","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.76085","url":null,"abstract":"Inconel 718 has been widely used in industries because of its excellent mechanical prop- erties. However, the machining process, particularly the turning/grinding, of Inconel 718 is still costly due to high cutting force and heavy tool damage. Fortunately, a prom - ising material removal technique, that is, ultrasonic-assisted turning/grinding (called UAT/UAG for simplicity), could potentially play a great role in the high efficiency pre - cision machining of Inconel 718 due to its excellent features such as smaller turning/ grinding force, better surface quality, longer tool working life and lower heat genera - tion. However, few attempts have been done on UAT/UAG of Inconel 718. Therefore, in this work, in order to confirm the feasibility of machining Inconel 718 by UAT/UAG, experimental apparatus/equipment has at first been constructed by installing an ultra sonic cutting-unit/spindle on a NC lathe/surface grinder for UAT/UAG operations, and then experimental investigations have been performed to elucidate the fundamental machining characteristics involving Inconel 718 workpiece including the effects of the ultrasonic vibration and the cutting/grinding speed on the work-surface finish, the machining force and temperature, the chip formation, the tool/wheel wears and so on. The obtained results show that grinding forces and surface roughness were decreased in UAT/UAG.","PeriodicalId":194741,"journal":{"name":"Superalloys for Industry Applications","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124336138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Dry High Speed Orthogonal Turning of Titanium Alloy Wear Evolution and Chip Morphology 干式高速正交车削钛合金的磨损演化与切屑形貌

Superalloys for Industry Applications Pub Date : 2018-08-01 DOI: 10.5772/INTECHOPEN.78669

M. Benghersallah, L. Boulanouar, G. List, G. Sutter

{"title":"Dry High Speed Orthogonal Turning of Titanium Alloy Wear Evolution and Chip Morphology","authors":"M. Benghersallah, L. Boulanouar, G. List, G. Sutter","doi":"10.5772/INTECHOPEN.78669","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.78669","url":null,"abstract":"The present work is an experimental study on the dry high-speed turning of Ti-6Al-4 V titanium alloy. The objective of this study is to see for high cutting speeds, how wear occurs on the face of insert and how to evolve cutting forces and chip formation. Cutting speeds tested is 600, 800, 1000 and 1200 m/min in orthogonal turning with a carbide insert tool H13A uncoated and coated TiN on a cylindrical titanium alloy part. Investigation on the wear inserts with 3D microscope scanning revered the crater formation is instantaneous and a chip adhesion. Welded chip causes detachment of carbide particles. In these experiments the chip shape was systematically investigated at each cutting conditions using optical microscopy. The chips produced were collected and polished to measure the thicknesses t2max and t2min. The distance between each segments dch and ɸseg inclination angle as described in the introduction part, the shear angle ɸ and the inclination angle of a segment ɸseg are differentiated. ɸseg angle is actually measured on the collected chips while the shear angle ɸ cannot be. The angle ɸ represents the initial shear similar to the one that describes the formation of a continuous chip in the primary shear zone. Cutting forces increase and stabilize before removing the tool. The chip reaches a very high temperature.","PeriodicalId":194741,"journal":{"name":"Superalloys for Industry Applications","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131284745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hot Corrosion of Superalloys in Boilers for Ultra-Supercritical Power Plants 超超临界电厂锅炉高温合金热腐蚀研究

Superalloys for Industry Applications Pub Date : 2018-08-01 DOI: 10.5772/INTECHOPEN.76083

N. Muktinutalapati, A. Natarajan, M. Arivarasu

引用次数: 3

High-Temperature Oxidation of Superalloy C-263 of Rings for Aircraft Engines 航空发动机环用高温合金C-263的高温氧化

Superalloys for Industry Applications Pub Date : 2017-12-20 DOI: 10.5772/INTECHOPEN.70256

C. G. Tiburcio, Alejandro Martínez, Jorge TaboadaSolis, P. Z. Robledo, F. E. López, J. Miramontes, F. A. Calderon

引用次数: 0