7 Questions 69 Answers 0 Followers
Questions related from Ahmad Zafari
Dear All, Can anyone explain how twins and kink bands are different? Based on my understanding a kink band originates from rotation of crystal planes by shear stress couples, resulting in a...
05 May 2017 8,327 9 View
Dear All, I work on a metastable beta Ti alloy processed by SPD. This alloy is supposed to be deformed mainly by twinning because of its low SFE and Bo and Md values. However, no twin was...
10 October 2016 6,467 16 View
Would you please have a look at the images attached and clarify whether there are any twins in the images or they are just Miore fringes. I indexed the corresponding FFT of the image and...
10 October 2016 4,927 5 View
Dear All, Is it possible to calculate critical resolved shear stress for twinning in Ti-beta (bcc)? Would you please suggest some refs? Thanks, Ahmad
08 August 2016 3,312 3 View
Hi All, The following equation is suggested to estimate grain size changes due to grain growth during annealing Dn - D0n=K(t-t0) I have seen in many papers that the n is obtained by plotting...
11 November 2015 4,701 7 View
Can anyone explain why the melting temperature of "linear and syndiotactic polyvinyl chloride, having a number-average molecular weight of 500,000 g/mol", is lower than that of "linear...
05 May 2015 8,495 5 View
Direct Comparison Method is used to calculate the volume fractions of two phases distributed throughout a material, by using XRD patterns. I have faced two questions in respect of this method: 1)...
09 September 2013 6,783 5 View
