Latest Yield Stories

2008-07-26 03:00:29

By Mintz, B Gunawardana, W D; Su, H Aluminium in solution in the ferrite in ferrite/pearlite steels has been found to have little influence on strength of the ferrite probably because up-till recently it has been added in very small amounts (0.02-0.08 wt-%Al) as a grain refining addition. There is indeed some doubt in the literature as to whether Al can solid solution harden. This lack of knowledge has not been important while Al additions are small but recently Al has been added in much...

2008-07-26 03:00:29

By Mintz, B Gunawardana, W D; Su, H The influence of Al on the strength and impact properties of hot rolled plain C-Mn low S steels has been examined at two C levels, 0.02 and 0.1% and two N levels, 0.001 and 0.004-0.005% (where percentage is to be taken as wt-%). It has been found that Al is an excellent element to add to hot rolled steels, an addition of 0.2% to a plain 0.1C-1.4Mn steel with 0.004-0.005%N resulting in an impact transition temperature of -95[degrees]C at a strength level...

2008-07-24 03:00:55

By Lee, Kyuhong Lee, Sang-Bok; Lee, Sang-Kwan; Lee, Sunghak In the present study, a Zr-based amorphous alloy matrix composite reinforced with tungsten continuous fibers was fabricated without pores or defects by a liquid pressing process; the microstructures and mechanical properties of the fibers were investigated. Approximately 60 vol pct of the fibers was distributed inside the amorphous matrix, although the matrix of the composite also contained a small number of polygonal crystalline...

2008-07-24 03:00:47

By Winkler, S Thompson, A; Salisbury, C; Worswick, M; Van Riemsdijk, I; Mayer, R In order to understand the crashworthiness and formability of advance high-strength steels, the effects of strain rate and temperature on the constitutive response of DP 600 and DP 780 steel tubes were investigated and compared with commercial drawing quality (DQ) and high strength low alloy (HSLA) 350 steel tubes. Uniaxial tensile tests were conducted at quasi-static (QS) (0.003 and 0.1 s^sup -1^),...

2008-07-13 15:00:19

By Walter Tunis It's the sort of break that a band like O.A.R. isn't accustomed to. For three months, the celebrated jam band stayed away from the road and the stage. That's quite an accomplishment considering that O.A.R.'s grass-roots popularity was established largely through touring. That it shared some of those concert bills with such high- profile acts as The Dave Matthews Band, a group O.A.R.'s early music strongly resembled, didn't hurt the recognition factor, either. The reason...

2008-02-29 03:00:27

By Das, S Singh, S B; Mohanty, O N; Bhadeshia, H K D H The basic science behind bake hardening steels is well understood in terms of the interactions between interstitial solutes and dislocations. However, the manufacture of such alloys involves a variety of other variables, the interactions between which are influential in controlling the extent of hardening. In the present work, a model which includes the chemical composition of the steel, the strain before aging and the annealing and...

Word of the Day
  • The navel or umbilicus.
  • In Greek archaeology: A central boss, as on a shield, a bowl, etc.
  • A sacred stone in the temple of Apollo at Delphi, believed by the Greeks to mark the 'navel' or exact center-point of the earth.
'Omphalos' comes from the ancient Greek.