Steve Gaudez's research while affiliated with French National Centre for Scientific Research and other places

... Past research on steels has shown that the use of in-situ approaches to gather timeresolved information is useful [17][18][19][20][21][22]. Furthermore, recent studies on microstructural development during Q&P treatment suggest that in-situ HEXRD is among the best approaches for studying carbon partitioning [7,[23][24][25][26][27][28][29]. ...

... The first difference, with respect to the as-rolled sample, is the higher number of recrystallized grains in the central zone. This fact is evidence that, despite the high tendency of recovering of the ferrite [43], the deformation energy stored in the central zone by hot rolling was enough to activate an SRX process in the post-annealing. Figure 9b also shows a heterogeneous grain size in the central zone of the sample; the left side has some larger grains ( ̅ ≈ 600 µ m) with orientations possibly related to the as-cast columnar grains but the right side showed smaller grain sizes ( ̅ = 172 µ m) with random orientations. ...

... Both bainitic ferrite and retained austenite during tempering processes at sufficiently high temperatures are degraded into a mixture of cementite and ferrite [32,34,[37][38][39][40][41][42][43]. An in-depth analysis of the decomposition processes of bainitic steels was described in the Ph.D. theses of Hulme-Smith [44], Saha Podder [45], and Gaudez [46]. Generally, the metastable bainitic structure tends to approach a thermodynamic equilibrium state during tempering processes. ...

... The influence of other oxide inclusions (summarized in Table 2) on the corrosion performance of LPBF-316L is not discussed in the literature. Besides LPBF, researchers [225] had reported nano-inclusions with different compositions, including sulphur-rich inclusion in 316L manufactured by laser metal deposition (LMD). However, the influence of these inclusions on the corrosion performance of the alloy is not reported in the literature. ...

... Past research on steels has shown that the use of in-situ approaches to gather timeresolved information is useful [17][18][19][20][21][22]. Furthermore, recent studies on microstructural development during Q&P treatment suggest that in-situ HEXRD is among the best approaches for studying carbon partitioning [7,[23][24][25][26][27][28][29]. ...

... In order to be able to consider these competing processes separately, additional studies using high energy X-ray diffraction (HEXRD) should be performed in the future to gain a deeper understanding of the individual reasons for incomplete C-partitioning. Furthermore, the relaxation phenomena and difference in expansion coefficients among martensite, tempered martensite, bainite and RA studied in [58,64,65] should be considered in the future work in order to include them in the present model. In order to meet the requirements of the steel industry in terms of best mechanical properties, particularly regarding excellent strength-ductility combinations, not only the amount of RA but rather its stability against SIMT plays a decisive role. ...