Table of Contents Table of Contents
Previous Page  12 / 78 Next Page
Show Menu
Previous Page 12 / 78 Next Page
Page Background

A D V A N C E D M A T E R I A L S & P R O C E S S E S | J A N U A R Y 2 0 1 6

1 2


sheet, but one of the rollers rotates

more quickly than the other. This not

only presses the sheet thinner, but also

creates a sheer strain due to the differ-

ent roller speeds. The crystal structure

within the titaniummoves forward fast-

er on the side of the fast roller than the

other, effectively distorting and break-

ing down the crystalline structure, cre-

ating small grains.

Researchers repeated the pro-

cess until the metal was 0.3 mm thick,

then exposed the sheet to 475°C for

five minutes. This allowed some of the

small grains to consume each other and

form large grains. This second process

creates a patchwork quilt of small and

large grains. The resulting material is

as strong as the small-grained titanium

because the surrounding layer of small

grains makes it difficult for the large

grains to deform. The material also re-

tains the ductility of the large grains,

because once enough strain is applied

the small and large grains want to

deform at different rates.

For more in-

formation: Yuntian Zhu, 919.513.0559,





The Lincoln Electric Co., Cleve-

land, will invest $30 million in a new

Welding Technology Center on its Eu-

clid, Ohio, campus. The center will fo-

cus on training welding educators and

industry leaders to address the rising

demand for welding education and ca-

reer pathways in welding and advanced

manufacturing. Lincoln Electric will also

dedicate resources to support welding

training for veterans at this facility.

Construction will begin early this

year with an opening anticipated in

2017, marking the centennial anniver-

sary of Lincoln’s legacy welding school,

the longest-running welding school in

the U.S. The new 130,000-sq-ft center

will double Lincoln’s welding education

capacity to 180 welding booths and

will include high-tech classroom and

seminar spaces. It will also showcase

the company’s latest technologies and

solutions into a comprehensive welding



By embedding ductile, large-grained columns (colored specks) in a harder,

ultrafine-grainedmatrix (black background), titanium’s strength was improved

without impairing its ductility. Courtesy of Yuntian Zhu.



Researchers at North Carolina

State University, Raleigh, and the Chi-

nese Academy of Sciences, Beijing, de-

veloped a technique to make titanium

stronger without sacrificing ductility.

The new technique manipulates the

grain size to give the metal the strength

of ultrafine-grained titanium with the

ductility of coarse-grained titanium.

Asymmetric rolling was used to pro-

cess a 2-mm-thick sheet of titanium.

The sheet passes between two rollers

that apply pressure to each side of the

New Star Metals,

Burr Ridge, Ill.,

changed its name to


Sciences Corp.

(MSC). Founded in

2010, New Star added the original

MSC to its list of acquisitions in

March 2014. MSC joined several

other business units as a global

supplier of metal products and

processing, engineering services,

and supply chain management to

the automotive, construction, and

consumer products industries.



Private equity firm

MidOcean Partners,

New York, completed the sale


Noranco Inc.,

Toronto, to

Precision Castparts Corp.,

Portland, Ore.,

on October 30, 2015. Noranco is a supplier of complex machined compo-

nents and assemblies for mission-critical landing gear, aerostructures,

and aero engine applications.