Influence of Hot Rolling Process on the Microstructure and Mechanical Properties of a Press Hardening Steel

Microstructure and mechanical properties of Ni-Cr alloys with various contents of Phosphorus (P) have been investigated. It is found that the increase of phosphorus refined dendritic structures in as-cast alloys and decreased micro-segregation of Chromium (Cr) element. α-Cr which precipitated during hot-rolling process was obviously inhibited by phosphorus because of its prior occupancy on grain boundaries and decreasing precipitation driving force of α-Cr. Tensile and impact properties were examined on samples under different heat treatments. Though the yield strength of as-rolled alloys was increased by precipitation of α-Cr, the elongation and impact energies were reduced. It is worthy to note that impact energies of samples solutioned at 950°C increased with the increasing phosphorus. The results indicated that dislocations are markedly effected by phosphorus which is probably the reason for improving impact energies.

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Study on the Asymmetric Hot Rolling of Aluminium Alloy Thick Plate

Materials Science Forum ◽

10.4028/www.scientific.net/msf.794-796.1275 ◽

2014 ◽

Vol 794-796 ◽

pp. 1275-1280

Author(s):

Yu Bo Zuo ◽

Xing Fu ◽

Jian Zhong Cui ◽

Ping Wang ◽

Lei Li ◽

...

Keyword(s):

Mechanical Properties ◽

Aluminium Alloy ◽

Hot Rolling ◽

Thick Plate ◽

Rolling Process ◽

Aviation Industry ◽

Hot Rolling Process ◽

Microstructure And Mechanical Properties ◽

Hot Rolled ◽

Asymmetric Hot Rolling

The development of aviation industry demands hot rolled aluminium alloy extra thick plates. However, it is quite difficult to obtain sufficient and uniform deformation of extra thick plate by conventional hot rolling process. The asymmetric hot rolling can generate an additional shear deformation and significantly improve the equivalent strain at the centre of the plate and consequently the uniformity of the microstructure, and mechanical properties. In the present work, the asymmetric rolling (ASR) was achieved by adjusting the diameters of the upper roll and the lower roll and was used to prepare hot rolled thick plate of an aluminium alloy. The effect of the asymmetric hot rolling process on the deformation, shape control, microstructure and mechanical properties was experimentally studied. The results showed that the ASR has a significant effect on metal deformation and can somehow refine microstructure and improve the uniformity of microstructure and properties although plate bending often happens during rolling process. This paper presents these results and gives corresponding discussions.

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Effect of Hot-Rolling Parameters on Microstructure and Mechanical Properties of 72LXA Steel Wire Rod

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.581-582.842 ◽

2012 ◽

Vol 581-582 ◽

pp. 842-846

Author(s):

Jian Hua Zeng ◽

Yi Chang Li ◽

Zheng Zhou ◽

Jun Chen

Keyword(s):

Mechanical Properties ◽

Hot Rolling ◽

Steel Wire ◽

Rolling Process ◽

Impact Factors ◽

Cooling Process ◽

Controlled Cooling ◽

Wire Rod ◽

Microstructure And Mechanical Properties ◽

Proeutectoid Ferrite

Effect of the laying head temperature and controlled cooling process on microstructure and mechanical properties of 72LXA wire rod were investigated．The results show that under the same cooling process，with the raising laying temperature and increasing sorbitizing rate and decreasing proeutectoid ferrite，the steel rod strength is improving，proeutectoid ferrite and sorbitizing rate are the critical impact factors on steel rod properties；indentifying cooling after perlite forming can restrain the dissolve of lamellar cementite；the mechanical properties of whole rod coil are improved by the proper rolling rate and air cooling．The high strength of 1050 MPa of steel rod was obtained，that shows the defined hot rolling process can conform to the steel rod properties requirement．

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Mechanical Properties and Transformation Behaviors of Ti-Zr Killed Low-Carbon Steels with High-Temperature Hot-Rolling Process

steel research international ◽

10.1002/srin.201600057 ◽

2016 ◽

Vol 87 (12) ◽

pp. 1715-1722 ◽

Cited By ~ 1

Author(s):

Chao Wang ◽

Guodong Wang ◽

Zhaodong Wang ◽

Raja Devesh Kumar Misra

Keyword(s):

Mechanical Properties ◽

High Temperature ◽

Hot Rolling ◽

Rolling Process ◽

Carbon Steels ◽

Low Carbon ◽

Low Carbon Steels ◽

Hot Rolling Process

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Evolution of microstructure, texture and mechanical properties of SiC/AZ31 nanocomposite during hot rolling process

Materials & Design ◽

10.1016/j.matdes.2015.12.165 ◽

2016 ◽

Vol 93 ◽

pp. 194-202 ◽

Cited By ~ 26

Author(s):

W.Q. Liu ◽

X.S. Hu ◽

X.J. Wang ◽

K. Wu ◽

M.Y. Zheng

Keyword(s):

Mechanical Properties ◽

Hot Rolling ◽

Rolling Process ◽

Hot Rolling Process ◽

Evolution Of Microstructure

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Interface Microstructure and Properties of 304 Austenite Stainless Steel/Low Carbon Steel Clad Plate by Casting and Hot Rolling Process

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.852.178 ◽

2014 ◽

Vol 852 ◽

pp. 178-182

Author(s):

Shuo Li ◽

Di Tang ◽

Hui Bin Wu ◽

Ji Guang Xiong

Keyword(s):

Mechanical Properties ◽

Stainless Steel ◽

Carbon Steel ◽

Hot Rolling ◽

Low Carbon Steel ◽

Rolling Process ◽

Low Carbon ◽

Interface Shear ◽

Austenite Stainless Steel ◽

Hot Rolling Process

The 304 austenite stainless steel and low carbon steel clad plate was fabricated by casting and hot rolling process. The mechanical properties and interface shear strength of clad plates with different thickness after rolling were investigated in detail. The microstructure characteristics of the clad interface were observed by SEM (Scanning Electron Microscope). The phases and chemical composition were analyzed by XRD (X-ray diffraction) and EDS (energy dispersive spectroscopy). Based on the results, the mechanical properties and interface shear strengths meet the requirements of national standards. No visible cracks were observed in the clad interface after bending test. Cr3C2precipitates, Fe3O4oxides and Fe-Cr intermetallic compound were distributed around the interface of clad plate after casting, but a good metallurgical bonding was achieved after hot-rolling.

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Influence of Heat Treatment on Mechanical Properties and Microstructure of Mining Machinery Steel Plate Containing Molybdenum and Niobium

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.602-604.342 ◽

2012 ◽

Vol 602-604 ◽

pp. 342-346

Author(s):

Xian Jun Wang ◽

Qing Feng Ding ◽

Wen Bin Liu

Keyword(s):

Mechanical Properties ◽

Heat Treatment ◽

Impact Toughness ◽

Hot Rolling ◽

Steel Plate ◽

Rolling Process ◽

Rolled Plate ◽

Rolled Steel ◽

Hot Rolling Process ◽

Mining Machinery

Influence of different heat treatment on microstructure and mechanical properties of mining machinery steel Plate containing molybdenum niobium was investigated. As-rolled steel plate was processed by normalizing and normalization-tempering respectively. Mechanical properties of as-rolled steel plate, normalizing steel plate and normalizing-tempering steel plate and their microstructures was made a contrast. The experiment result showed that formation of coarse ferrite grain in as-rolled state leads to lower impact toughness. Normalizing treatment can refine coarse ferrite formed in hot rolling process but formation of carbon oversaturation induced new dislocation and distortion. Processing of proper normalizing-tempering can eliminate coarse ferrite in as-rolled state and relieve new dislocation and distortion formed in normalizing process, and therefore made the mechanical properties of the as-rolled plate be the best state.

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